diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..8b162db
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,10 @@
+repos:
+  - repo: https://github.com/psf/black
+    rev: 22.10.0
+    hooks:
+      - id: black
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    # Ruff version.
+    rev: v0.0.278
+    hooks:
+      - id: ruff
diff --git a/pyproject.toml b/pyproject.toml
index b771a71..a908c12 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,6 +7,44 @@ name = "retailtwin"
 authors = [{name = "Guillem Borrell", email = "borrell.guillem@bcg.com"}]
 readme = "README.md"
 dynamic = ["version", "description"]
+dependencies = [
+  "duckdb",
+  "pydantic",
+  "typer",
+  "pyyaml",
+  "pydantic-settings",
+  "polars",
+  "pyarrow",
+  "sqlalchemy[asyncio] > 2.0.13",
+  "adbc-driver-postgresql",
+  "adbc-driver-sqlite",
+  "prompt_toolkit",
+  "asyncpg",
+  "pydantic-settings"
+]
+
 
 [project.urls]
 Home = "https://github.com/Borrell-Guillem_bcgprod/retailtwin"
+
+[project.optional-dependencies]
+doc = [
+    "mkdocs-material",
+    "pymdown-extensions",
+    "mkdocstrings[python-legacy]>=0.18",
+    "mkdocs-gen-files",
+    "markdown-include",
+    "mkdocs-with-pdf",
+    "mkdocs-literate-nav"]
+
+dev = [
+    "black",
+    "ruff",
+    "pre-commit"
+]
+
+[project.scripts]
+retailtwin = "retailtwin.cli.data:app"
+stock = "retailtwin.cli.stock:app"
+pos = "retailtwin.cli.pos.main:app"
+tasks = "retailtwin.cli.tasks.main:app"
\ No newline at end of file
diff --git a/src/retailtwin/__init__.py b/src/retailtwin/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/api/README.md b/src/retailtwin/api/README.md
new file mode 100644
index 0000000..ab0dfca
--- /dev/null
+++ b/src/retailtwin/api/README.md
@@ -0,0 +1,30 @@
+# Super simple API-based stock terminal
+
+Run the backend with
+
+```bash
+uvicorn dengfun.retail.api.main:app
+```
+
+Use Caddy to reverse proxy and the following Caddyfile. Paths are static so you have to run caddy from the root of the package
+
+```
+:80 {
+    handle_path /api/v1/* {
+        reverse_proxy localhost:8000
+    }
+    file_server {
+        root src/dengfun/retail/api/static
+    }
+}
+```
+
+If you execute
+
+```bash
+caddy run -c Caddyfile
+```
+
+You should be able to browse the application at http://127.0.0.1, and reach the api docs at http://127.0.0.1/api/v1/docs
+
+Caddy can be installed in Windows with Chocolatey
\ No newline at end of file
diff --git a/src/retailtwin/api/__init__.py b/src/retailtwin/api/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/api/composition.py b/src/retailtwin/api/composition.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/api/db.py b/src/retailtwin/api/db.py
new file mode 100644
index 0000000..fcfd473
--- /dev/null
+++ b/src/retailtwin/api/db.py
@@ -0,0 +1,138 @@
+import os
+from operator import itemgetter
+from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
+from sqlalchemy import select, desc
+from dengfun.retail.views import get_inventory_view, get_stores_view
+from dengfun.retail.api.settings import Settings
+
+
+async def get_session():
+    try:
+        engine = create_async_engine(Settings().db_uri.unicode_string())
+        yield async_sessionmaker(engine, expire_on_commit=False)
+    except:  # noqa
+        await engine.dispose()
+
+
+def detail_button(batch: int):
+    return "".join(
+        [
+            f'<a href="detail.html?batch={batch}">'
+            f'<button class="btn btn-secondary" type="button">🔍</button>'
+            f"</a>"
+        ]
+    )
+
+
+async def get_inventory(
+    store: int,
+    page: int,
+    pagesize: int,
+    sortby: str,
+    root_path: str,
+    async_session: async_sessionmaker[AsyncSession] = None,
+) -> str:
+    """Get inventory for a given location
+
+    Args:
+        store (int): Location id
+        page (int): Page number for pagination
+        pagesize (int): Page size for pagination
+        sortby (str): Column name used for sorting
+        root_path (str): Root path of the API
+        async_session (async_sessionmaker[AsyncSession], optional):
+            SQLAlchemy async session. Defaults to None.
+
+    Returns:
+        str: HTML table rows with the content
+    """
+    output = list()
+    inventory = get_inventory_view()
+
+    # Selects the column from which to sort by, and if asc or desc
+    col_reversed = sortby.startswith("-")
+    col_selector = itemgetter(sortby.strip("-"))
+
+    async with async_session() as session:
+        stmt = (
+            select(
+                inventory.c[
+                    "upc",
+                    "batch",
+                    "name",
+                    "package",
+                    "received",
+                    "best_until",
+                    "quantity",
+                ]
+            )
+            .where(inventory.c.location == store)
+            .limit(pagesize)
+            .offset(pagesize * page)
+            .order_by(
+                desc(col_selector(inventory.c))
+                if col_reversed
+                else col_selector(inventory.c)
+            )
+        )
+        result = await session.execute(stmt)
+
+        query_params = " ".join(
+            [
+                f'js:{{page: "{page + 1}",'
+                f'pagesize: "{pagesize}",'
+                f'sortby: "{sortby}",'
+                'store: document.getElementById("store").value}'
+            ]
+        )
+
+        # Turn the results in a sequence of HTML table rows
+        for i, record in enumerate(result.fetchall()):
+            line = ""
+            cells = (
+                " ".join(f"<td>{it}</td>" for it in record)
+                + f" <td>{detail_button(record[1])}</td>"
+            )
+            if i == (pagesize - 1):  # Handle last row for infinite scrolling
+                line = " ".join(
+                    [
+                        f'<tr hx-get="{root_path}/stock"',
+                        f"hx-vals='{query_params}'",
+                        f'hx-trigger="revealed" hx-swap="afterend">{cells}</tr>',
+                    ]
+                )
+            else:
+                line = f"<tr>{cells}</tr>"
+
+            output.append(line)
+
+    return os.linesep.join(output)
+
+
+async def get_stores(
+    root_path: str,
+    async_session: async_sessionmaker[AsyncSession] = None,
+):
+    # Build store options
+    store_rows = ['<option selected value="1">Choose store</option>']
+    stores = get_stores_view()
+    async with async_session() as session:
+        stmt = select(stores)
+        result = await session.execute(stmt)
+        for record in result.fetchall():
+            store_rows.append(f'<option value="{record[0]}">{record[1]}</option>')
+
+    # Wrap with the select tag
+    query_params = (
+        'js:{page: "0", '
+        'pagesize: "20", '
+        'sortby: "upc", '
+        'store: document.getElementById("store").value}'
+    )
+    return (
+        f'<select class="form-select" id="store"'
+        f'hx-get="{root_path}/stock" '
+        f"hx-vals='{query_params}' "
+        f'hx-target="#results" '
+        f">{os.linesep.join(store_rows)}</>"
+    )
diff --git a/src/retailtwin/api/main.py b/src/retailtwin/api/main.py
new file mode 100644
index 0000000..9ae193a
--- /dev/null
+++ b/src/retailtwin/api/main.py
@@ -0,0 +1,43 @@
+from fastapi import FastAPI, Request, Depends
+from fastapi.responses import HTMLResponse
+from sqlalchemy.ext.asyncio import async_sessionmaker, AsyncSession
+from dengfun.retail.api.db import get_inventory, get_session, get_stores
+
+app = FastAPI(root_path="/api/v1")
+
+
+@app.get("/test")
+async def test(request: Request):
+    return {"message": "Hello World", "root_path": request.scope.get("root_path")}
+
+
+@app.get("/stock", response_class=HTMLResponse)
+async def stock(
+    request: Request,
+    store: int = 1,
+    page: int = 0,
+    pagesize: int = 20,
+    sortby: str = "upc",
+    async_session: async_sessionmaker[AsyncSession] = Depends(get_session),
+) -> str:
+    body = await get_inventory(
+        store=store,
+        page=page,
+        pagesize=pagesize,
+        sortby=sortby,
+        root_path=request.scope.get("root_path"),
+        async_session=async_session,
+    )
+    return HTMLResponse(body, status_code=200)
+
+
+@app.get("/stores", response_class=HTMLResponse)
+async def stores(
+    request: Request,
+    async_session: async_sessionmaker[AsyncSession] = Depends(get_session),
+):
+    body = await get_stores(
+        root_path=request.scope.get("root_path"),
+        async_session=async_session,
+    )
+    return HTMLResponse(body, status_code=200)
diff --git a/src/retailtwin/api/settings.py b/src/retailtwin/api/settings.py
new file mode 100644
index 0000000..5316ea4
--- /dev/null
+++ b/src/retailtwin/api/settings.py
@@ -0,0 +1,7 @@
+from pydantic import PostgresDsn
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    db_uri: PostgresDsn
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8")
diff --git a/src/retailtwin/api/static/detail.html b/src/retailtwin/api/static/detail.html
new file mode 100644
index 0000000..1d87e53
--- /dev/null
+++ b/src/retailtwin/api/static/detail.html
@@ -0,0 +1,107 @@
+<!DOCTYPE html>
+
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Latest compiled and minified CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/css/bootstrap.min.css" rel="stylesheet"
+        integrity="sha384-4bw+/aepP/YC94hEpVNVgiZdgIC5+VKNBQNGCHeKRQN+PtmoHDEXuppvnDJzQIu9" crossorigin="anonymous">
+    <title>Retail digital twin web terminal</title>
+</head>
+
+<html>
+
+<body>
+    <div class="container-fluid">
+        <div hx-get="/api/v1/stores" hx-trigger="load">
+        </div>
+        <table class="table">
+            <thead>
+                <tr>
+                    <th>upc
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"upc", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-upc", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>batch</th>
+                    <th>name
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"name", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-name", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+
+                    </th>
+                    <th>package</th>
+                    <th>received
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"received", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-received", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>best_until
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"best_until", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-best_until", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>quantity
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"quantity", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-quantity", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>detail</th>
+                </tr>
+            </thead>
+            <tbody id="results" hx-get="/api/v1/stock?page=0&pagesize=20&sortby=upc&store=1" hx-trigger="load">
+            </tbody>
+        </table>
+    </div>
+    <script src="https://code.jquery.com/jquery-3.7.0.slim.min.js"
+        integrity="sha256-tG5mcZUtJsZvyKAxYLVXrmjKBVLd6VpVccqz/r4ypFE=" crossorigin="anonymous"></script>
+    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.8/dist/umd/popper.min.js"
+        integrity="sha384-I7E8VVD/ismYTF4hNIPjVp/Zjvgyol6VFvRkX/vR+Vc4jQkC+hVqc2pM8ODewa9r"
+        crossorigin="anonymous"></script>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/js/bootstrap.min.js"
+        integrity="sha384-Rx+T1VzGupg4BHQYs2gCW9It+akI2MM/mndMCy36UVfodzcJcF0GGLxZIzObiEfa"
+        crossorigin="anonymous"></script>
+    <script src="https://unpkg.com/htmx.org@1.9.4"
+        integrity="sha384-zUfuhFKKZCbHTY6aRR46gxiqszMk5tcHjsVFxnUo8VMus4kHGVdIYVbOYYNlKmHV"
+        crossorigin="anonymous"></script>
+
+</body>
+
+
+</html>
\ No newline at end of file
diff --git a/src/retailtwin/api/static/index.html b/src/retailtwin/api/static/index.html
new file mode 100644
index 0000000..95ff4c3
--- /dev/null
+++ b/src/retailtwin/api/static/index.html
@@ -0,0 +1,117 @@
+<!DOCTYPE html>
+
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Latest compiled and minified CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/css/bootstrap.min.css" rel="stylesheet"
+        integrity="sha384-4bw+/aepP/YC94hEpVNVgiZdgIC5+VKNBQNGCHeKRQN+PtmoHDEXuppvnDJzQIu9" crossorigin="anonymous">
+    <title>Retail digital twin web terminal</title>
+</head>
+
+<html>
+
+<body>
+    <div class="container-fluid">
+        <div>
+            <div class="p-2">
+                <button class="btn btn-secondary">Home</button>
+                <button class="btn btn-secondary">Query UPC</button>
+                <button class="btn btn-secondary">Search</button>
+                <button class="btn btn-secondary">Warehouse stock</button>
+            </div>
+        </div>
+    </div>
+    <div class="container-fluid">
+        <div hx-get="/api/v1/stores" hx-trigger="load">
+        </div>
+        <table class="table">
+            <thead>
+                <tr>
+                    <th>upc
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"upc", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-upc", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>batch</th>
+                    <th>name
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"name", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-name", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+
+                    </th>
+                    <th>package</th>
+                    <th>received
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"received", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-received", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>best_until
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"best_until", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-best_until", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>quantity
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"quantity", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-quantity", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>detail</th>
+                </tr>
+            </thead>
+            <tbody id="results" hx-get="/api/v1/stock?page=0&pagesize=20&sortby=upc&store=1" hx-trigger="load">
+            </tbody>
+        </table>
+    </div>
+    <script src="https://code.jquery.com/jquery-3.7.0.slim.min.js"
+        integrity="sha256-tG5mcZUtJsZvyKAxYLVXrmjKBVLd6VpVccqz/r4ypFE=" crossorigin="anonymous"></script>
+    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.8/dist/umd/popper.min.js"
+        integrity="sha384-I7E8VVD/ismYTF4hNIPjVp/Zjvgyol6VFvRkX/vR+Vc4jQkC+hVqc2pM8ODewa9r"
+        crossorigin="anonymous"></script>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/js/bootstrap.min.js"
+        integrity="sha384-Rx+T1VzGupg4BHQYs2gCW9It+akI2MM/mndMCy36UVfodzcJcF0GGLxZIzObiEfa"
+        crossorigin="anonymous"></script>
+    <script src="https://unpkg.com/htmx.org@1.9.4"
+        integrity="sha384-zUfuhFKKZCbHTY6aRR46gxiqszMk5tcHjsVFxnUo8VMus4kHGVdIYVbOYYNlKmHV"
+        crossorigin="anonymous"></script>
+
+</body>
+
+
+</html>
\ No newline at end of file
diff --git a/src/retailtwin/api/static/search.html b/src/retailtwin/api/static/search.html
new file mode 100644
index 0000000..a28a373
--- /dev/null
+++ b/src/retailtwin/api/static/search.html
@@ -0,0 +1,107 @@
+<!DOCTYPE html>
+
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Latest compiled and minified CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/css/bootstrap.min.css" rel="stylesheet"
+        integrity="sha384-4bw+/aepP/YC94hEpVNVgiZdgIC5+VKNBQNGCHeKRQN+PtmoHDEXuppvnDJzQIu9" crossorigin="anonymous">
+    <title>Retail digital twin web terminal</title>
+</head>
+
+<html>
+
+<body>
+    <div class="container-fluid">
+        <div hx-get="/api/v1/stores" hx-trigger="load">
+        </div>
+        <table class="table">
+            <thead>
+                <tr>
+                    <th>upc
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"upc", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-upc", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>batch</th>
+                    <th>name
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"name", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-name", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+
+                    </th>
+                    <th>package</th>
+                    <th>received
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"received", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-received", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>best_until
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"best_until", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-best_until", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>quantity
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"quantity", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▲
+                        </button>
+                        <button hx-get="/api/v1/stock"
+                            hx-vals='js:{page: "0", pagesize: "20", sortby:"-quantity", store:document.getElementById("store").value}'
+                            hx-trigger="click" hx-target="#results">
+                            ▼
+                        </button>
+                    </th>
+                    <th>actions</th>
+                </tr>
+            </thead>
+            <tbody id="results" hx-get="/api/v1/stock?page=0&pagesize=20&sortby=upc&store=1" hx-trigger="load">
+            </tbody>
+        </table>
+    </div>
+    <script src="https://code.jquery.com/jquery-3.7.0.slim.min.js"
+        integrity="sha256-tG5mcZUtJsZvyKAxYLVXrmjKBVLd6VpVccqz/r4ypFE=" crossorigin="anonymous"></script>
+    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.8/dist/umd/popper.min.js"
+        integrity="sha384-I7E8VVD/ismYTF4hNIPjVp/Zjvgyol6VFvRkX/vR+Vc4jQkC+hVqc2pM8ODewa9r"
+        crossorigin="anonymous"></script>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/js/bootstrap.min.js"
+        integrity="sha384-Rx+T1VzGupg4BHQYs2gCW9It+akI2MM/mndMCy36UVfodzcJcF0GGLxZIzObiEfa"
+        crossorigin="anonymous"></script>
+    <script src="https://unpkg.com/htmx.org@1.9.4"
+        integrity="sha384-zUfuhFKKZCbHTY6aRR46gxiqszMk5tcHjsVFxnUo8VMus4kHGVdIYVbOYYNlKmHV"
+        crossorigin="anonymous"></script>
+
+</body>
+
+
+</html>
\ No newline at end of file
diff --git a/src/retailtwin/bootstrap.py b/src/retailtwin/bootstrap.py
new file mode 100644
index 0000000..e1fce0e
--- /dev/null
+++ b/src/retailtwin/bootstrap.py
@@ -0,0 +1,269 @@
+import json
+import string
+from datetime import datetime, timedelta
+from itertools import repeat
+from pathlib import Path
+from random import choice, choices, randint
+from uuid import uuid4
+
+import polars as pl
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+import dengfun
+from dengfun.retail.utils import db_uri_from_session
+from dengfun.retail.models import (
+    Discount,
+    Item,
+    ItemBatch,
+    ItemOnShelf,
+    Location,
+    LocationType,
+    Provider,
+    TaskOwner,
+)
+
+# Some configuration parameters.
+PACKAGE_ROOT = Path(dengfun.__file__).parent / "retail"
+PRODUCT_LIST_FILE = "data/products.csv"
+DISCOUNT_LIST_FILE = "data/discounts.csv"
+RANDOM_PEOPLE_FILE = "data/random_people.csv"
+NUM_LOCATIONS = 100
+LOCATION_TYPES = ["store", "warehouse"]
+LOCATION_TYPES_WEIGHTS = [10, 1]
+NUM_CUSTOMERS = 1_000_000
+CUSTOMER_BATCH_SIZE = 10_000
+
+
+# Some utility functions
+def read_products() -> pl.DataFrame:
+    """Load and sanitize the dummy product list stored in a file as part of the package
+
+    Returns:
+        pl.DataFrame: Polars dataframe with the products
+    """
+    return (
+        pl.read_csv((PACKAGE_ROOT / PRODUCT_LIST_FILE).resolve())
+        .with_columns(
+            product=pl.col("product").str.strip(" "),
+            package=pl.col(" package").str.strip(" "),
+            price=pl.col(" price").str.strip(" ").str.strip("$"),
+            provider=pl.col(" provider").str.strip(" "),
+        )
+        .select(
+            [pl.col("product"), pl.col("package"), pl.col("provider"), pl.col("price")]
+        )
+    )
+
+
+def read_discounts() -> pl.DataFrame:
+    """Load the discount list stored in a file as part of the package
+
+    Returns:
+        pl.DataFrame: _description_
+    """
+    return pl.read_csv((PACKAGE_ROOT / DISCOUNT_LIST_FILE).resolve())
+
+
+def read_people() -> pl.DataFrame:
+    """Load the dummy customer list stored in a file as part of the package
+
+    Returns:
+        pl.DataFrame: _description_
+    """
+    return pl.read_csv((PACKAGE_ROOT / RANDOM_PEOPLE_FILE).resolve())
+
+
+def bootstrap_discounts(session: Session):
+    """Load the discount table into the database
+
+    Args:
+        session (Session): SQLAlchemy ORM session
+    """
+    for discount in read_discounts().iter_rows():
+        session.add(Discount(name=discount[0], definition=json.loads(discount[1])))
+
+    session.commit()
+
+
+def bootstrap_providers(session: Session):
+    """Load the providers table with data from the product list. Only the name changes,
+    and other provider information is filled with the same data or mocked.
+
+    Args:
+        session (Session): SQLAlchemy ORM session
+    """
+    ascii_upper = [s.upper() for s in string.ascii_letters]
+    for provider in read_products().select(pl.col("provider").unique()).to_series():
+        session.add(
+            Provider(
+                name=provider,
+                address="Fake address street, number XX",
+                phone="+1 555 555 55 55",
+                vat=f"{randint(10000000,99999999)}{choice(ascii_upper)}",
+            )
+        )
+
+    session.commit()
+
+
+def bootstrap_items(session: Session):
+    """Load data into the Items table from the product list
+
+    Args:
+        session (Session): SQLAlchemy ORM sessoin
+    """
+    for data in read_products().select(pl.all()).iter_rows():
+        volume = randint(2, 10)
+        provider = session.scalar(select(Provider).where(Provider.name == data[2])).id
+        session.add(
+            Item(
+                name=data[0],
+                upc=randint(0, 999999999999),
+                package=data[1],
+                current=True,
+                provider=provider,
+                volume_unpacked=volume,
+                volume_packed=volume - 1,
+            )
+        )
+    session.commit()
+
+
+def bootstrap_locations(session: Session):
+    """Create NUM_LOCATIONS of LOCATION_TYPES, with LOCATION_TYPES_WEIGHTS providing
+    the proportion of each location. If location is of type warehouse, capacity is
+    around 10 times bigger.
+
+    Args:
+        session (Session): SQLAlchemy ORM session
+    """
+    for i, ltype in enumerate(LOCATION_TYPES):
+        session.add(LocationType(name=ltype, retail=(ltype == "store")))
+
+    session.commit()
+
+    for i in range(NUM_LOCATIONS):
+        c = choices(LOCATION_TYPES, LOCATION_TYPES_WEIGHTS)
+        loc = session.scalar(select(LocationType).where(LocationType.name == c[0]))
+        session.add(
+            Location(
+                loctype=loc.id,
+                name=f"Location {i} {loc.name}",
+                capacity=randint(50_000, 100_000)
+                * (1 + 9 * (int(loc.name == "warehouse"))),
+            )
+        )
+
+    session.commit()
+
+
+def bootstrap_clients(session: Session):
+    """Load data into the customers table in batches.
+
+    Args:
+        session (Session): SQLAlchemy ORM session
+    """
+    connection_uri = db_uri_from_session(session)
+    people = read_people()
+    for i in range(NUM_CUSTOMERS // CUSTOMER_BATCH_SIZE):
+        print(f"Write batch {i} of {NUM_CUSTOMERS // CUSTOMER_BATCH_SIZE}")
+        data = (
+            pl.DataFrame(
+                {
+                    "name": people.select(pl.col("name"))
+                    .sample(CUSTOMER_BATCH_SIZE, with_replacement=True, shuffle=True)
+                    .to_series(),
+                    "middlename": people.select(pl.col("middlename"))
+                    .sample(CUSTOMER_BATCH_SIZE, with_replacement=True, shuffle=True)
+                    .to_series(),
+                    "surname": people.select(pl.col("surname"))
+                    .sample(CUSTOMER_BATCH_SIZE, with_replacement=True, shuffle=True)
+                    .to_series(),
+                }
+            )
+            .with_columns(
+                name=pl.concat_str(
+                    [pl.col("name"), pl.col("middlename"), pl.col("surname")],
+                    separator=" ",
+                )
+            )
+            .select(pl.col("name"))
+        )
+        pl.DataFrame(
+            {
+                "document": [
+                    f"{str(randint(0, 99999999)).zfill(8)}"
+                    for _ in range(CUSTOMER_BATCH_SIZE)
+                ],
+                "info": [json.dumps({"name": name[0]}) for name in data.iter_rows()],
+            },
+        ).write_database(
+            "customers", connection_uri, if_exists="append", engine="sqlalchemy"
+        )
+
+
+def bootstrap_stock(session: Session):
+    """Load items as stock in each location. The total weight is estimated to not to
+    stock over capacity.
+
+    Args:
+        session (Session): SQLAlchemy ORM session
+    """
+    products = read_products()
+    db_uri = db_uri_from_session(session)
+    items_df = pl.read_database("select * from items", db_uri, engine="adbc")
+    locations_df = pl.read_database("select * from locations", db_uri, engine="adbc")
+    discounts = list(
+        pl.read_database("select id from discounts", db_uri, engine="adbc")
+        .select(pl.col("id"))
+        .to_series()
+    ) + [None]
+    weights = [1 for _ in range(len(discounts) - 1)] + [50]
+    average_volume_unpacked = items_df.select(pl.col("volume_unpacked").mean())[0, 0]
+
+    for location in locations_df.iter_rows():
+        print(f"Stocking location {location[0]} from {len(locations_df)}")
+        stock_quantity = int(location[3] / average_volume_unpacked / len(products))
+        with_prices = items_df.join(
+            products,
+            left_on=["name", "package"],
+            right_on=["product", "package"],
+        )
+
+        # Create the batch too
+        for lot_id, unit_price, sku in zip(
+            repeat(str(uuid4())[:23]),
+            with_prices.select([pl.col("price")]).to_series(),
+            with_prices.select([pl.col("sku")]).to_series(),
+        ):
+            batch = ItemBatch(
+                sku=sku,
+                lot=lot_id,
+                order=None,
+                received=datetime.now(),
+                unit_cost=unit_price,  # TODO: There's no margin for the moment
+                price=unit_price,
+                best_until=datetime.now() + timedelta(days=30),
+                quantity=stock_quantity,
+            )
+            session.add(batch)
+            session.commit()
+
+            random_discount = choices(discounts, weights, k=1)[0]
+            on_shelf = ItemOnShelf(
+                batch=batch.id,
+                discount=random_discount if random_discount else None,
+                quantity=stock_quantity,
+                location=location[0],
+            )
+            session.add(on_shelf)
+            session.commit()
+
+
+def bootstrap_taskowners(session: Session):
+    for name in ["stocker", "cashier", "manager", "warehouse"]:
+        taskowner = TaskOwner(name=name)
+        session.add(taskowner)
+
+    session.commit()
diff --git a/src/retailtwin/cli/__init__.py b/src/retailtwin/cli/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/cli/data.py b/src/retailtwin/cli/data.py
new file mode 100644
index 0000000..4841fd3
--- /dev/null
+++ b/src/retailtwin/cli/data.py
@@ -0,0 +1,68 @@
+import typer
+from sqlalchemy import create_engine
+from sqlalchemy.orm import Session
+
+from dengfun.retail.bootstrap import (
+    bootstrap_clients,
+    bootstrap_discounts,
+    bootstrap_items,
+    bootstrap_locations,
+    bootstrap_providers,
+    bootstrap_stock,
+    bootstrap_taskowners,
+)
+from dengfun.retail.models import Base
+from dengfun.retail.sql.sync import funcandproc
+
+app = typer.Typer()
+
+
+@app.command()
+def init(db_uri: str):
+    """Persist the schema on the database
+
+    Args:
+        db_uri (str): SQLAlchemy db uri
+    """
+    engine = create_engine(db_uri, echo=True)
+    Base.metadata.create_all(engine)
+
+
+@app.command()
+def sync(db_uri: str):
+    """Sync the functions, procedures, triggers and views
+
+    Args:
+        db_uri (str): SQLAlchemy db uri
+    """
+    funcandproc(db_uri)
+
+
+@app.command()
+def bootstrap(db_uri: str):
+    """Populate the databse with data. Only execute on an empty database
+
+    Args:
+        db_uri (str): Sqlalchemy db uri
+    """
+    engine = create_engine(db_uri)
+
+    with Session(engine) as session:
+        print("Discounts...")
+        bootstrap_discounts(session)
+        print("Providers...")
+        bootstrap_providers(session)
+        print("Locations...")
+        bootstrap_locations(session)
+        print("Items...")
+        bootstrap_items(session)
+        print("Clients...")
+        bootstrap_clients(session)
+        print("Stockage...")
+        bootstrap_stock(session)
+        print("TaskOwners")
+        bootstrap_taskowners(session)
+
+
+if __name__ == "__main__":
+    app()
diff --git a/src/retailtwin/cli/db.py b/src/retailtwin/cli/db.py
new file mode 100644
index 0000000..3e216ba
--- /dev/null
+++ b/src/retailtwin/cli/db.py
@@ -0,0 +1,109 @@
+"""
+Several utilities to fetch data from the database
+"""
+import polars as pl
+from rich.table import Table
+from typing import Tuple
+
+
+def fetch_from_db(db_uri: str, location: int) -> Tuple[pl.DataFrame]:
+    """Fetcn basic information about inventory from the database
+
+    Args:
+        db_uri (str): SQLAlchemy db URI
+        location (int): Location ID for the store or warehouse
+
+    Returns:
+        Tuple[pl.DataFrame]: Two polars dataframe continig all items,
+            and the local stock respectively
+    """
+    items = (
+        query_items(db_uri)
+        .select(pl.all())
+        .select([pl.col("upc"), pl.col("name"), pl.col("package")])
+        .with_columns(pl.col("upc").cast(str))
+    )
+    local_stock = query_local_batches(db_uri, location).with_columns(
+        pl.col("upc").cast(str),
+        pl.col("batch").cast(str),
+        pl.col("quantity").cast(str),
+        pl.col("received").cast(str),
+        pl.col("best_until").cast(str),
+    )
+    return items, local_stock
+
+
+def df_to_table(df: pl.DataFrame, title="Items") -> Table:
+    """Process a Polars dataframe and create a Rich table from it
+
+    Args:
+        df (pl.DataFrame): The polars dataframe
+        title (str, optional): Title for the displayed table. Defaults to "Items".
+
+    Returns:
+        Table: The Rich table to be displayed
+    """
+
+    table = Table(title=title)
+
+    for column in df.columns:
+        table.add_column(str(column))
+
+    for row in df.iter_rows():
+        table.add_row(*row)
+
+    return table
+
+
+def query_items(db_uri: str) -> pl.DataFrame:
+    """Query all available items from the database that can be kept in stock
+
+    Args:
+        db_uri (str): SQLAlchemy database URI
+
+    Returns:
+        pl.DataFrame: Polars dataframe with the items
+    """
+    return pl.read_database(
+        "select * from items where current = true", db_uri, engine="adbc"
+    )
+
+
+def query_local_batches(db_uri: str, location: int) -> pl.DataFrame:
+    """Query all batches stored in location
+
+    Args:
+        db_uri (str): SQLAlchemy database URI
+        location (int): Id of the current location
+
+    Returns:
+        pl.DataFrame: Polars Dataframe with the batches in stock
+    """
+
+    return pl.read_database(
+        f"select * from inventory where location = {location}",
+        db_uri,
+        engine="adbc",
+    )
+
+
+def query_warehouse_stock(db_uri: str, item: int) -> pl.DataFrame:
+    """Returns stock available for an item in all warehouses
+
+    Args:
+        db_uri (str): SQLAlchemy database URI
+        item (int): Id of the item
+
+    Returns:
+        pl.DataFrame: Polars Dataframe with the stock stock
+    """
+
+    return pl.read_database(
+        f"select * from warehouse_stock where upc = {item}",
+        db_uri,
+        engine="adbc",
+    )
+
+
+def sync_pos_schema():
+    pass
diff --git a/src/retailtwin/cli/pos/__init__.py b/src/retailtwin/cli/pos/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/cli/pos/main.py b/src/retailtwin/cli/pos/main.py
new file mode 100644
index 0000000..3494a7a
--- /dev/null
+++ b/src/retailtwin/cli/pos/main.py
@@ -0,0 +1,217 @@
+"""
+Terminal that mimics what a Point of Sale may operate like.
+"""
+import typer
+import polars as pl
+from dengfun.retail.cli.db import query_local_batches
+from dengfun.retail.cli.pos.models import Base, Sync, Direction, Cart, Item
+from dengfun.retail.utils import db_uri_from_session
+from datetime import datetime
+
+from sqlalchemy import create_engine, select
+from sqlalchemy.orm import Session
+from prompt_toolkit import PromptSession
+from prompt_toolkit.completion import WordCompleter
+
+# from prompt_toolkit.shortcuts import clear
+from rich.console import Console
+from rich.markdown import Markdown
+
+console = Console()
+
+HELP = """
+# Retail twin POS
+
+This is a simple terminal that simulates a dumb PoS with a single-line screen.
+"""
+
+CACHE_FILE_URL = "sqlite:///pos.db"
+
+CONNECT_ERROR_MESSAGE = """
+# ERROR
+
+Could not sync to the central database.
+
+The terminal will try to operate without a connection.
+"""
+
+
+def sync(session: Session, db_remote_uri: str, location: int):
+    db_local_uri = db_uri_from_session(session)
+
+    # Fetch data from the remote database
+    try:
+        inventory = query_local_batches(db_remote_uri, location)
+    except:  # noqa: E722
+        console.print(Markdown(CONNECT_ERROR_MESSAGE))
+        return
+    # The price and the discount is fixed by the latest received batch
+    items = (
+        inventory.select(
+            [
+                pl.col("upc"),
+                pl.col("price"),
+                pl.col("discount_definition").alias("discount"),
+                pl.col("received"),
+                pl.col("received").max().over("upc").alias("max_received"),
+            ]
+        )
+        .filter(pl.col("received") == pl.col("max_received"))
+        .select([pl.col("upc"), pl.col("price"), pl.col("discount")])
+        .with_columns(pl.col("price").str.strip().cast(pl.Float32) * 100)
+        .with_columns(pl.col("price").cast(pl.Int32))
+    )
+    items.write_database(
+        "items", db_local_uri, if_exists="replace", engine="sqlalchemy"
+    )
+
+    # Sync all customers
+    (
+        pl.read_database("select * from customers", db_remote_uri, engine="adbc")
+        .select([pl.col("id"), pl.col("document")])
+        .write_database(
+            "customers", db_local_uri, if_exists="replace", engine="sqlalchemy"
+        )
+    )
+
+    # Add last sync
+    sync = Sync(direction=Direction.pull)
+    session.add(sync)
+    session.commit()
+
+    # Sync unsynced carts
+    unsynced_carts = pl.read_database(
+        "select * from carts where synced = false and total_amount is not null",
+        db_local_uri,
+        engine="adbc",
+    )
+
+    if not unsynced_carts.is_empty():
+        (
+            unsynced_carts.select(
+                [pl.col("checkout_dt").alias("checkout"), pl.col("customer")]
+            )
+            .with_columns(location=location)
+            .write_database(
+                "carts", db_remote_uri, if_exists="append", engine="sqlalchemy"
+            )
+        )
+
+        # Query for items to sync
+        query = """
+        select
+          c.id as cart,
+          i.upc as upc,
+          i.quantity
+        from
+          itemsoncart i
+        join
+          carts c
+        on
+          i.cart = c.id
+        where
+          c.synced = false"""
+
+        pl.read_database(query, db_local_uri, engine="adbc").write_database(
+            "itemsoncart", db_remote_uri, engine="sqlalchemy"
+        )
+
+        # Set synced to cart at the end of the process
+        for cart in session.scalars(
+            select(Cart).filter(Cart.synced == False)  # noqa: E712
+        ).all():
+            cart.synced = True
+
+        session.commit()
+
+
+def load_items(session: Session):
+    return [str(it) for it in session.scalars(select(Item.upc)).all()]
+
+
+def handle_command(command: str, cart_id: int, item_id: int, **kwargs):
+    print(command, cart_id, item_id)
+    session = kwargs["session"]
+
+    if command == "n":  # Start a new cart
+        cart = Cart(checkin_dt=datetime.now(), synced=False)
+        session.add(cart)
+        session.commit()
+
+        return cart.id, "", ""
+
+    # Handle adding a new item
+    elif cart_id is not None:
+        # Check if the upc is in the database
+        if session.scalar(select(Item).filter(Item.upc == int(command))).one_or_none():
+            return cart_id, item_id, ""
+        else:
+            return cart_id, "", "ERROR: Code not found"
+
+    else:
+        cart_id, item_id if item_id else "", ""
+
+
+def main(db_uri: str, location: int):
+    console.print("Fetching data...")
+
+    # Create the schema of the local database
+    local_engine = create_engine(CACHE_FILE_URL)
+    Base.metadata.create_all(local_engine)
+
+    with Session(local_engine) as session:
+        sync(session, db_uri, location)
+
+        # Default completer with barcodes
+        completer = WordCompleter(load_items(session))
+
+        # Update the local copy of the data.
+        console.print(Markdown(HELP))
+        term = PromptSession()
+
+        # State of the pos
+        cart_id = ""
+        item_id = ""
+        error = ""
+
+        while True:
+            if cart_id and item_id:
+                if error:
+                    prompt = f"[{item_id}# quantity] !{error}!>"
+                else:
+                    prompt = f"[{item_id}# quantity]>"
+            elif cart_id and not item_id:
+                prompt = f"[{cart_id}# code]> "
+            else:
+                prompt = "#> "
+
+            try:
+                text = term.prompt(prompt, completer=completer)
+            except KeyboardInterrupt:
+                continue
+            except EOFError:
+                break
+            else:
+                if text in ["x", "q"]:
+                    break
+                elif text == "h":
+                    console.print(Markdown(HELP))
+                elif text == "r":
+                    console.print("Refreshing...")
+                    sync(session, db_uri, location)
+                    completer = WordCompleter(load_items(session))
+                else:
+                    cart_id, item_id, error = handle_command(
+                        text,
+                        cart_id,
+                        item_id,
+                        location=location,
+                        completer=completer,
+                        db_remote_uri=db_uri,
+                        session=session,
+                    )
+
+    print("GoodBye!")
+
+
+app = typer.run(main)
diff --git a/src/retailtwin/cli/pos/models.py b/src/retailtwin/cli/pos/models.py
new file mode 100644
index 0000000..d35fc1f
--- /dev/null
+++ b/src/retailtwin/cli/pos/models.py
@@ -0,0 +1,61 @@
+from enum import Enum
+from datetime import datetime
+from decimal import Decimal
+from typing import Dict
+from sqlalchemy import ForeignKey, Numeric, JSON
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
+
+__all__ = ["Direction", "PaymentType", "Base", "Sync", "Cart", "Item", "ItemOnCart"]
+
+
+class Direction(Enum):
+    push = 0
+    pull = 1
+
+
+class PaymentType(Enum):
+    cash = 0
+    card = 1
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+class Sync(Base):
+    __tablename__ = "syncs"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    direction: Mapped[Direction]
+    sync_dt: Mapped[datetime] = mapped_column(default=datetime.now())
+
+
+class Item(Base):
+    __tablename__ = "items"
+    upc: Mapped[int] = mapped_column(primary_key=True)
+    unitprice: Mapped[Decimal] = mapped_column(Numeric(9, 2), nullable=False)
+    discount: Mapped[Dict[str, Dict[str, int]]] = mapped_column(JSON, nullable=True)
+
+
+class Customer(Base):
+    __tablename__ = "customers"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    document: Mapped[str] = mapped_column(nullable=False)
+
+
+class Cart(Base):
+    __tablename__ = "carts"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    checkin_dt: Mapped[datetime] = mapped_column(default=datetime.now())
+    checkout_dt: Mapped[datetime] = mapped_column(nullable=True)
+    total_amount: Mapped[Decimal] = mapped_column(Numeric(9, 2), nullable=True)
+    payment_type: Mapped[PaymentType] = mapped_column(nullable=True)
+    customer: Mapped[int] = mapped_column(ForeignKey("customers.id"), nullable=True)
+    synced: Mapped[bool]
+
+
+class ItemOnCart(Base):
+    __tablename__ = "itemsoncart"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    cart: Mapped[int] = mapped_column(ForeignKey("carts.id"))
+    upc: Mapped[int] = mapped_column(ForeignKey("items.upc"))
+    quantity: Mapped[int]
diff --git a/src/retailtwin/cli/stock.py b/src/retailtwin/cli/stock.py
new file mode 100644
index 0000000..db5c7de
--- /dev/null
+++ b/src/retailtwin/cli/stock.py
@@ -0,0 +1,166 @@
+# ruff: noqa: E501
+import typer
+import polars as pl
+from sqlalchemy import create_engine, text as query
+from dengfun.retail.cli.db import query_warehouse_stock, df_to_table, fetch_from_db
+from prompt_toolkit import PromptSession
+from prompt_toolkit.completion import WordCompleter
+from prompt_toolkit.shortcuts import clear
+from rich.console import Console
+from rich.markdown import Markdown
+
+console = Console()
+
+HELP = """
+# Retail twin stock management CLI
+
+This is a simple terminal to manage stock. Enter a single-letter command followed by <Enter>. The available commands are:
+
+* **l**: Lists all the current items stocked in any location.
+* **s**: Enters search mode. Search an item by name.
+* **q**: Store query mode. Queries the stock of an item by UPC in the current location.
+* **w**: Warehouse query mode. Queries the stock of an item by UPC in all warehouses. Requires connection to the database.
+* **c**: Cancel mode. Retires a batch giving a UPC. Requires connection to the database.
+* **b**: Batch mode. Requests a given quantity from an item to the warehouse. Requires connection to the database.
+* **r**: Refresh data from the stock database.
+* **h**: Print this help message.
+* **x**: Exit this terminal.
+
+"""
+
+
+def handle_command(command: str, **kwargs):
+    """_summary_
+
+    Args:
+        command (str): Single letter command
+    """
+    items = kwargs["items"]
+    session = kwargs["session"]
+    item_completer = kwargs["completer"]
+    location = kwargs["location"]
+    local_stock = kwargs["local_stock"]
+    db_uri = kwargs["db_uri"]
+
+    if command == "l":
+        console.print(df_to_table(items))
+    elif command == "s":
+        # Command opens a new prompt
+        completer = WordCompleter(
+            items.select(pl.col("name")).to_series().str.to_lowercase().to_list()
+        )
+        text = session.prompt("s> ", completer=completer)
+        console.print(
+            df_to_table(
+                items.select(pl.all()).filter(
+                    pl.col("name").str.to_lowercase().str.contains(text)
+                )
+            )
+        )
+    elif command == "q":  # Query stock in current location
+        upc = session.prompt("q> ", completer=item_completer)
+        df = local_stock.select(
+            [
+                pl.col("upc"),
+                pl.col("name"),
+                pl.col("package"),
+                pl.col("price"),
+                pl.col("best_until"),
+                pl.col("quantity"),
+            ]
+        ).filter(pl.col("upc") == upc)
+        console.print(
+            df_to_table(
+                df.with_columns(pl.col("price").cast(str)),
+                title=f"Item {upc} on location {location}",
+            )
+        )
+
+    elif command == "w":  # Query stock in warehouses
+        text = session.prompt("w> ", completer=item_completer)
+        console.print(
+            df_to_table(
+                query_warehouse_stock(db_uri, text).with_columns(
+                    pl.col("received").cast(str),
+                    pl.col("best_until").cast(str),
+                    pl.col("upc").cast(str),
+                    pl.col("quantity").cast(str),
+                ),
+                title=f"Warehouse stock for item {text}",
+            )
+        )
+
+    elif command == "c":  # Retire a batch from the shelves.
+        batches = local_stock.select(pl.col("batch")).to_series().to_list()
+        batchid = session.prompt("c [enter batch id]> ")
+
+        if batchid in batches:
+            console.print(
+                df_to_table(
+                    local_stock.select(pl.all()).filter(pl.col("batch") == batchid),
+                    title=f"Batch {batchid} on location {location}",
+                )
+            )
+            text = session.prompt(f"c [Remove batch {batchid}? (Y/N)]> ")
+            if text.lower() == "y":
+                engine = create_engine(db_uri)
+                conn = engine.connect()
+                conn.execute(
+                    query(f"select retire_batch_from_shelves({batchid}, {location})")
+                )
+                conn.commit()
+            else:
+                console.print("Aborted")
+
+        else:
+            console.print(f"Error, batch {batchid} doesn't exist")
+    else:
+        console.print(f"Command {command} not supported")
+
+
+def main(db_uri: str, location: int):
+    # Fetch all data necessary from the database
+    console.print("Fetching data...")
+    items, local_stock = fetch_from_db(db_uri, location)
+
+    clear()
+    console.print(Markdown(HELP))
+
+    # Default completer with barcodes
+    completer = WordCompleter(
+        items.select(pl.col("upc")).to_series().cast(str).to_list()
+    )
+    session = PromptSession()
+
+    while True:
+        try:
+            text = session.prompt(
+                "#> ",
+            )
+        except KeyboardInterrupt:
+            continue
+        except EOFError:
+            break
+        else:
+            if text == "x":
+                break
+            elif text == "h":
+                console.print(Markdown(HELP))
+            elif text == "r":
+                console.print("Refreshing...")
+                items, local_stock = fetch_from_db(db_uri, location)
+            else:
+                handle_command(
+                    text,
+                    items=items,
+                    location=location,
+                    session=session,
+                    completer=completer,
+                    local_stock=local_stock,
+                    db_uri=db_uri,
+                )
+
+    print("GoodBye!")
+
+
+app = typer.run(main)
diff --git a/src/retailtwin/cli/tasks/__init__.py b/src/retailtwin/cli/tasks/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/cli/tasks/main.py b/src/retailtwin/cli/tasks/main.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/cli/tasks/models.py b/src/retailtwin/cli/tasks/models.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/data/discounts.csv b/src/retailtwin/data/discounts.csv
new file mode 100644
index 0000000..ff84c28
--- /dev/null
+++ b/src/retailtwin/data/discounts.csv
@@ -0,0 +1,11 @@
+name,definition
+2x1,{}
+3x2,{}
+percent_discount_10,{"discount": 10}
+percent_discount_15,{"discount": 15}
+percent_discount_20,{"discount": 20}
+percent_discount_25,{"discount": 25}
+percent_discount_30,{"discount": 30}
+percent_discount_50,{"discount": 50}
+second_unit_half,{}
+second_unit_same_provider_half,{}
diff --git a/src/retailtwin/data/products.csv b/src/retailtwin/data/products.csv
new file mode 100644
index 0000000..12ea0dc
--- /dev/null
+++ b/src/retailtwin/data/products.csv
@@ -0,0 +1,451 @@
+product, package, price, provider
+Whole grain bread, 1 loaf, $3.50, Healthy Grains
+Pure spring water, 24 pack, $4.99, Mountain Springs
+Organic eggs, dozen, $4.20, Happy Chicken
+Italian spaghetti, 500g, $1.20, Mamma Italia
+Corn flakes, 500g, $2.99, Golden Harvest
+Habanero hot sauce, 150ml, $6.95, Fire Blast
+Canned tuna, 180g, $1.75, Ocean's Finest
+Full cream yogurt, 1kg, $2.75, Creamy Dreams
+Fruit jam, 340g, $3.50, Sweet Orchard
+Olive oil, 1 liter, $8.00, Mediterranean Gold
+Banana chips, 200g, $2.69, Tropical Crunch
+Almond milk, 1 liter, $3.20, Nutty Delights
+Peanut butter, 500g, $3.89, Nutty Spread
+Smoked salmon, 300g, $8.99, Fresh Waters
+White wine, 750ml, $10.99, Vineyard Bliss
+Whole wheat flour, 1kg, $2.15, Mill Power
+Raisin granola, 500g, $3.79, Morning Fuel
+Instant coffee, 200g, $4.99, Sunrise Roast
+Cheddar cheese, 450g, $5.75, Cheesy Valley
+Organic baby carrots, 450g, $2.70, Bunny Love
+Wasabi peas, 200g, $2.30, Atomic Snacks
+Jasmine rice, 2kg, $4.80, Oriental Gourmet
+Gluten-free breadsticks, 200g, $3.00, Healthy Crunch
+Lime soda, 2 liters, $1.89, Zest Fizz
+Oatmeal cookies, 400g, $3.99, Grandma's Love
+Quinoa cereal, 500g, $3.80, Natural Glow
+Cooking spray, 200ml, $2.90, Kitchen Ease
+Blueberry jam, 340g, $3.00, Berry Bliss
+Refined coconut oil, 500ml, $4.50, Tropical magic
+Cranberry juice, 1 liter, $3.49, Ruby Splash
+Honey Nuts Cereal, 16 oz box, $3.60, BeeGood
+Tomato Ketchup, plastic bottle, $1.80, Reddrop
+Whole Grain Bread, plastic wrapped, $2.65, DeliLoaf
+Coffee Beans, 1lb bag, $9.95, Queen's Brew
+Citrus Hand Soap, 16 oz bottle, $2.75, CitrusSplash
+Almond Butter, glass jar, $7.99, Nutti Delight
+Organic Pasta, 1kg packet, $3.50, Pastaroma
+Frozen Pizza, 14", $8.40, Pizzani
+Extra Virgin Olive Oil, 500ml bottle, $6.60, Oliva Bella
+Cherry Cola Soda, 12 pack cans, $5.39, BubblFizz
+Spinach Tortilla Wraps, pack of 10, $2.35, DreamWraps
+Jasmine Rice, 1kg bag, $4.90, Oriental Delights
+Natural Peanut, large bag, $4.79, NutLand
+Blueberry Fruit Bars, box of 6, $3.99, Berrylicious
+Popcorn Kernels, 1lb bag, $2.20, Pop-Go
+White Vinegar, 1 litre bottle, $1.90, CrispClear
+Island Blend Coffee, 1lb bag, $11.80, Paradise Grind
+Raspberry Jam, 12 oz jar, $3.20, Berry Habit
+Dishwashing Liquid, 32 oz bottle, $2.75, SparkleClean
+Classic Mayonnaise, 16 oz jar, $3.99, BestoMayo
+Quinoa Flakes, 270g box, $4.20, QuinoaQuench
+Tea Bags, box of 20, $2.89, DreamSip
+Cream Crackers, 400g box, $1.70, Snappy
+Bourbon Biscuits, pack of 12, $3.45, SweetBite
+Avocado Oil, 250ml bottle, $7.20, GreenSqueeze
+Thai Curry Paste, 14 oz jar, $4.30, ThaiSpice
+Toilet Paper, 6-roll pack, $4.99, SoftCushion
+Spaghetti Sauce, 24 oz jar, $2.79, Itali Aroma
+Natural Juice, 64 oz bottle, $4.45, RainBow Splash
+Strawberry Yogurt, 6 oz tub, $1.59, Creamy Spoon
+Toilet Paper, 12 pack, $7.50, Cloud Soft
+Energy Drink, 16 fl oz can, $2.85, Thunderbolts
+Orange Juice, 64 fl oz, $3.50, Juicy Morning
+Dog Food, 15 lb bag, $22.75, Paws'n'Tails
+Toothpaste, 5.5 oz tube, $3.95, BrilliantSmiles
+Breakfast Cereal, 12 oz box, $3.65, Morning Sunrise
+Canned Beans, 15 oz can, $1.35, Trusty Beans
+Ground Coffee, 1 lb, $7.50, Bright Morning Brew
+Hand Soap, 12.5 fl oz pump bottle, $2.95, Foam'n'Fresh
+Shampoo, 16 fl oz bottle, $5.75, Lustrous Locks
+Olive Oil, 16.9 fl oz bottle, $8.95, SunGold Medley
+Sugar, 5 lb bag, $2.95, Sweet Crystals
+Chips, 11 oz packet, $3.50, Crunch Supreme
+Laundry Detergent, 100 fl oz bottle, $9.50, Clean Vibrance
+Bread, loaves, $2.25, Grain Bliss Bakery
+Pasta Sauce, 24 oz jar, $3.15, Bella Nona's
+Baby Wipes, 72 wipes pack, $3.25, CuddlePure
+Frozen Pizza, 22 oz box, $5.95, TasteFest Pizzeria
+Yogurt, 6 oz cup, $0.85, CreamHill Dairy
+Instant Noodles, 3 oz packet, $0.35, Super Bowl
+BBQ Sauce, 18 oz bottle, $3.75, Smoky Journey
+Flour, 5 lb bag, $2.50, Home Baker's Friend
+Soda, 12 pack cans, $4.95, Fizz and Pop
+Vegetable Stock, 32 fl oz carton, $2.75, RichGarden Flavor
+Quinoa, 16 oz bag, $4.95, Noble Grains
+Protein Bar, 1.7 oz bar, $1.50, Power Fuel
+Honey, 8 oz jar, $6.50, Busy Bees Natural
+Aluminum Foil, 100 sq ft roll, $4.25, Silver Sheen
+Mustard, 14 oz bottle, $1.95, Zesty Expressions
+Ice Cream, 1.5 qt, $5.75, Frosty Delights
+Granola bars, 5 pack, $4.10, Crunchy Delight
+Frozen Pizza, 450g, $5.30, Pizza Fantastica
+Rice Cakes, 10 units, $1.85, Crispy Joy
+Cereal, 1kg, $3.59, Morning Whisk
+Oatmeal, 500g, $2.75, FarmFresh Foods
+Pasta sauce, 500ml, $3.90, Bella Cucina
+Fruit yogurt, 150g, $0.70, Dairy Pearl
+Potato Chips, 200g, $1.80, CrunchCraze Snacks
+Canned Tuna, 150g, $1.50, Ocean's Bounty
+Laundry Detergent, 1L, $6.99, SwiftClean
+Organic Honey, 450g, $6.95, Bee Sweet
+Olive Oil, 1L, $8.10, Mediterranean Magic
+Protein Shake, 330ml, $2.50, Muscle Boost
+Multi-vitamin juice, 1L, $3.90, Vital Sip
+Soda, 2L, $1.99, FizzPop
+Cheese Slices, 200g, $3.25, Cheesy Delights
+Instant Noodles, 80g pack, $0.65, Noodle Express
+Shaving Cream, 200ml, $4.30, SmoothMen
+Body Wash, 400ml, $5.10, Fresh Waves
+Toothpaste, 100g, $2.70, SparkleSmile
+Whole Grain Bread, 500g, $2.50, Baker's Choice
+Chocolate spread, 400g, $4.20, ChocoDream
+Baby feeding bottles, 2 pack, $10.99, BabyCaring
+Dog food, 2kg, $14.50, PetLove
+Almond Milk, 1L, $3.10, NutriNatural
+Coffee Beans, 250g, $6.30, Brew Bliss
+Fruit Preserves, 450g, $3.55, Sweet Mama
+Ice Cream, 2L, $7.99, Creamy Glaze
+Baby Diapers, 50 pack, $22.50, ComfyKids
+Solar-Powered Flashlight, 1 piece, $15.99, EcoShine
+Wholegrain Bread, 500 grams, $4.99, Earthy Crunch
+Organic Peanut Butter, 340 grams jar, $5.49, Nutty's Best
+Chunky Tomato Sauce, 700 ml glass jar, $3.39, Bella Italia
+Extra Virgin Olive Oil, 1 liter bottle, $9.99, Pure & Simple
+Organic Brown Rice, 1 kilogram bag, $4.79, Grain Goodness
+Greek Style Yogurt, 500 gram plastic tub, $3.49, Dairy's Pride
+Gourmet Dark Chocolate, 200 gram bar, $3.99, Choconilla
+Sparkling Natural Mineral Water, 1 liter bottle, $1.99, Bubbling Oasis
+Frozen Blueberries, 500 gram bag, $4.89, Frosty Berries
+Granulated Sugar, 1 kilogram bag, $2.39, Sweet Essentials
+Smoked Salmon, 200 gram pack, $8.49, Ocean Delicacy
+Shredded Mozzarella Cheese, 200 gram bag, $3.19, Cheesy Wonders
+Cold Pressed Almond Oil, 500 ml bottle, $14.49, Nudges of Nature
+Multi-grain bread, 1 lb bag, $2.75, Grain Masters
+Canned corn, 15 oz can, $1.45, Kernel's Best
+Organic chicken, 1lb bag vacuum-packed, $6.50, Free Roam Farms
+Tomato Sauce, 24 oz jar, $3.00, Mama's Homemade
+Broccoli florets, 1 lb bag, $2.50, Green Heaven Farms
+Whole wheat pasta, 16 oz box, $2.80, Pasta Delight
+Strawberry jam, 16 oz jar, $3.75, Sweet Berry
+Natural peanut butter, 18 oz jar, $4.00, Nutty Delish
+Toothpaste, 8 oz tube, $3.50, Fresh Minty
+Bathroom tissue, 12 rolls, $10.00, Soft&Silky
+Olive oil, 750 ml bottle, $7.50, Greek Gold
+Almond milk, 64 fl oz carton, $3.50, Nutrich
+Canned tuna, 5 oz can, $1.75, Ocean Fresh
+Brown rice, 2 lb bag, $3.00, Healthy Grains
+Granola bars, box of 6, $4.25, Crunchy Munchy
+Apple cider, 64 fl oz bottle, $3.50, Gold Orchard
+Organic eggs, dozen, $4.00, Farm Fresh
+Shredded mozzarella, 8 oz bag, $2.75, Cheese Haven
+Cereal, 14 oz box, $3.50, Breakfast Bites
+Frozen pizza, 22 oz box, $5.00, Pizzeria Delights
+Cheddar cheese, 8 oz pack, $3.80, Diary Delicacies
+Vanilla yogurt, 32 oz tub, $3.00, Yogurt Bliss
+Cranberry juice, 64 fl oz bottle, $3.75, Berry Fresh
+Mild salsa, 16 oz jar, $2.50, Fiesta Flavors
+Ground coffee, 12 oz bag, $6.00, Brew Bonanza
+Green tea bags, box of 20, $4.00, Zen Harmony
+White wine, 750 ml bottle, $15.00, Vineyard's Finest
+Skinless chicken breast, 1 lb bag vacuum-packed, $6.00, Featherlite Farms
+Strawberries, 1 lb box, $3.50, Fresh and Dewy
+Apple pie, 24 oz box, $5.00, Granny's Bake Shop
+Green Tea Bags, box of 20, $4.19, Golden Leaf
+Gluten-Free Pasta, 500 gram box, $3.89, Happy Harvest
+Cake Mix, 360 gram box, $3.39, Baking Bliss
+Premium Dog Food, 2 kilogram bag, $8.99, Bow-wow Bites
+Raw Honey, 450 gram jar, $6.49, Bee's Bounty
+Breakfast Cereal, 700 gram box, $3.99, Sunrise Crunch
+Organic Coconut Milk, 400 ml can, $2.29, Coco's Charm
+French Roast Coffee, 250 gram pack, $5.99, Morning Bliss
+Crunchy Peanut Brittle, 200 gram pack, $3.69, Candy Lovin'
+Roasted Hazelnut Spread, 400 gram jar, $4.99, Nutty Spread
+Baby Wipes, 50 count pack, $2.99, Baby's Care
+Instant Oatmeal, 1 kilogram bag, $3.49, Oaty Delight
+Premium Ice Cream, 500 ml tub, $4.89, Dreamy Scoops
+Chicken Broth, 1 liter tetra pack, $2.89, Country Kitchen
+Fair Trade Bananas, 1 kilogram, $2.49, Plantain Planet
+Organic Eggs, Box of 12, $4.99, Healthy Yolks
+Barbecue Sauce, 500 ml bottle, $3.99, Grill Master
+Salted Pretzels, 300g bag, $1.99, Pretzel Kingdom
+Orchard Apple Juice, 1 liter, $3.50, Apple Core Naturals
+Whole Wheat Bread, 1 loaf, $2.80, Wheat Wonder
+Peach Yoghurt, 500g pot, $1.70, Naturals Yoghurt Co.
+Organic Strawberry Jam, 450g jar, $4.35,  Berry's Best
+Mexican Style Salsa, 250g jar, $2.50, Southwest Spices
+Cheesy Pita Chips, 230g bag, $1.75, Pita Pirates
+Frozen Pepperoni Pizza, 16 inch, $5.50, Pizzeria Pronto
+Clarified Butter Spread, 355g tub, $5.20, Golden Glow
+Lemon Lime Soda, 2 liters, $1.99, Citrus Burst
+Herb and Garlic Olive Oil, 500ml container, $3.80, Olive Oasis
+BBQ Rib-flavored Potato Chips, 150g bag, $2.00, Crispy Canyon
+All-Purpose Cleaner, 32 fl oz, $3.99, Germ Go Away
+Double Chocolate Cookies, 350g box, $3.50, Sweet Temptations
+Oatmeal Cereal, 750g box, $4.00, Sunshine Grains
+Raspberry Iced Tea, 1.5 liter, $2.50, Summer Quench
+Smoked Tuna in Can, 185g, $3.20, SeaFlavors
+Almond Protein Bar, 75g pack, $2.10, Nourish and Energize
+Vanilla Ice Cream, 2 liter carton, $4.99, Polar Temptations
+Light Soy Sauce, 200ml bottle, $2.55, Eastern Essence
+Spiced Pumpkin Soup, 400g can, $3.75, Easy Eats
+Bacon Cheeseburger Frozen Entree, 350g box, $6.99, MealBox
+Pistachio Nuts, 250g pouch, $5.99, Nutty Nature
+Ginger Beer, 330ml bottle, $2.30, Zest & Spice
+Cherry Blossom Room Spray, 300ml canister, $3.65, Home Comforts
+Honey Roasted Peanut Butter, 340g jar, $3.89, Nutty Delight
+White Basmati Rice, 1kg bag, $3.55, Eastern Grains
+Rainbow Pasta, 500g bag, $2.25, Wiggly Noodles
+Sea Salt and Caramel Popcorn, 200g bag, $1.79, PopBurst
+All-Natural Cat Food, 1.5kg bag, $14.99, Kitty Pride
+Organic tomato sauce, 24 oz jar, $6.35, Farm Fresh
+Chocolate chip cereal, 15.5 oz box, $4.99, Morning Delights
+Green tea bags, 20 pack, $3.65, Tranquil Leaves
+Garlic herb bread, 1 loaf, $3.50, Rustic Bakery
+Oatmeal raisin cookies, 12 count bag, $4.85, Gluten Free Galore
+Extra virgin olive oil, 1 liter, $12.75, Olive Grove Industries
+Dark chocolate almond bar, 100 grams, $2.75, Chocolate Euphoria
+Natural almond butter, 16 oz jar, $7.99, Nutty Spreadables
+Lemon verbena soap, bar, $4.85, Fresh Fields
+Balsamic vinegar, 500 ml bottle, $7.35, Vine Magic
+Organic frozen berries, 16 oz bag, $5.49, Nature's Sweetness
+Gluten-free pasta, 500 grams package, $3.29, Grain Perfect
+Spicy curry sauce, 14 oz jar, $4.49, Taste of India
+Vanilla almond milk, 1 litre, $3.99, Silk Delicacies
+Honey roasted peanuts, 16 oz can, $3.95, Crunchy Essentials
+Cucumber melon lotion, 12 fl oz, $7.99, Fresh Skin
+Organic brown rice, 2 lb bag, $4.99, Healthy Harvest
+Apple cinnamon granola, 500 grams box, $5.99, Sunrise Cereals
+Canned black beans, 15 oz can, $1.99, Bountiful Pantry
+Quinoa chips, 150 grams bag, $2.79, Snack Revolution
+Aloe vera shampoo, 16 fl oz bottle, $8.99, Pure Tresses
+Stainless steel cleaner, 14 oz can, $5.75, Sparkle Shine
+Pure maple syrup, 350 ml bottle, $14.99, Maple Haven
+Mint dental floss, 50 m box, $2.79, Smile Bright
+Unsalted mixed nuts, 16 oz jar, $6.85, Nutty Fixes
+Lavender hand sanitizer, 2 oz bottle, $1.49, Germ Guardian
+Soy-based vegan cheese, 200 grams package, $5.25, Veganed Cheese
+Brown sugar glazed donuts, 6 count box, $4.49, Glaze Heaven
+Basil pesto, 8 oz jar, $6.49, Flavors of Italy
+Kale and spinach chips, 85 grams bag, $3.85, Power Green Crunchies
+Diet Pasta, 500g box, $3.00, Slim Noodles
+Acai Berry Juice, 1 liter, $4.99, Jungle Vitality
+Vanilla Cashew Butter, 450g jar, $5.75, Nutty Naturals
+Eco-friendly Toilet Paper, 12 roll pack, $7.99, Green Soft
+Non-alcoholic Whisky, 700ml bottle, $25, Spiritless Spirits
+Vegan Pork Sausages, 500g pack, $6.99, Plant Farm
+Sugar-Free Chocolate Chip Cookies, 200g box, $4.50, Sweetless Snacks
+Organic Coconut Oil, 500ml jar, $8.99, Pure Islands
+Healthy Ramen Noodles, 400g pack, $2.20, Shinshi Ramen
+Matcha Green Tea Dust, 100g box, $15.99, Orient Essence
+Whole Grain Microwavable Rice, 500g pouch, $2.50, Quick Grains
+Thai Curry Sauce, 200g bottle, $3.99, Taste of Thailand
+Gluten-Free Bread Loaf, 400g pack, $4.70, Wheatless Wonders
+Bioactive Honey, 300g jar, $10.99, Nature's Elite
+Vegetable Protein Powder, 1kg pouch, $15.00, V-Protein
+Low-Carb Ice cream, 500ml tub, $5.50, Guiltless Pleasures
+Organic Chia Seeds, 500g bag, $6.50, Chia City
+Smoked Vegan Cheese, 200g pack, $7.00, Plant Delights
+Dairy-Free Butter, 250g tub, $3.99, Butter Bliss
+Frozen Quinoa Mix, 400g bag, $2.99, Quick Health
+Plant-Based Burger Patties, 450g box, $7.50, Green Butcher
+Biotin Shampoo, 250ml bottle, $8.99, Healthy Hair
+Soy Wax Candles, pack of 6, $11.00, Gentle Glow
+Fit Soda, 6 cans pack, $4.99, Fresh Fizz
+Sugar-Free Gum, 32 pieces pack, $2.50, Fresh Breeze
+Air-Fried Popcorn, 300g bag, $3.99, Puffy Snacks
+Anti-Aging Cream, 50g box, $25.00, Ageless Beauty
+Activated Charcoal Toothpaste, 75ml, $7.00, Dazzle Smile
+DIY Cake Mix, 600g box, $3.00, Bake Joy
+Pet-friendly Bug Spray, 200ml bottle, $9.99, Bug Busters
+Organic tomato sauce, 500g jar, $4.30, Tomatoes Forever
+Whole grain bread, plastic bag, $2.75, WholeFood Delights
+Organic eggs, dozen pack, $4.50, Local Farm Fresh
+Salmon filet, vacuum pack, $8.30, Seascape Delicacy
+Vegan lasagna, 800g tray, $6.50, Veggie Magic
+Deluxe Mixed Nuts, 300g tin, $9.89, Nutty Goodness
+Apple juice, 2 liters, $1.99, Apple a Day
+Creamy peanut butter, 1 kilogram jar, $4.50, Peanut Nutopia
+Fresh coffee beans, 500g package, $5.99, Moon Roast
+Natural honey, 450g jar, $8.30, Nature's Gold
+Strawberry jam, 500g jar, $3.99, Berry Nice
+Whole grain pasta, 750g bag, $2.20, Italian Pasta King
+Granola breakfast cereals, 600g box, $4.75, Breakfast Sunrise
+Red Wine, 750ml bottle, $6.75, Summer Vinery
+Bourbon whiskey, 700ml bottle, $27.99, Old Kentucky Treasure
+Vegetarian hotdogs, pack of 8, $3.99, Plant Power
+Gluten-free pizza, 350g box, $5.50, Bella Gluten-Free
+Dairy-free chocolate, 100g bar, $1.80, Vegan Choco Dreams
+Sparkling water, 1 liter, $0.99, Fizz Harmony
+Vegetable stock cubes, pack of 6, $1.55, Veggie Secret
+Coconut milk, 1 liter, $3.20, Tropical Bliss
+Canned chickpeas, 400g tin, $0.85, Ideal Ingredient
+Soya sauce, 150ml bottle, $3.50, Eastern Traditions
+Canned pineapple, 567g tin, $1.35, Tropical Delight
+Balsamic vinegar, 250ml bottle, $4.25, Olive Leaf
+Baked beans, 415g tin, $0.95, Wholesome Meal
+Premium dog food, 2kg bag, $9.95, Happy Hound
+Organic olive oil, 500ml bottle, $7.50, Italian Olive Breeze
+Popcorn kernels, 500g bag, $1.60, Popcorn Fiesta
+Entire wheat flour, 5kg sack, $6.50, Healthy Harvest
+Apple cider vinegar, 500 ml, $3.50, Golden Apple Inc.
+Chocolate cookies, 250g package, $5.25, Choco Delight Co.
+Goat cheese, 200g package, $6.90, Alpine Farms
+Organic honey, 450g jar, $7.95, Bee Happy Inc.
+Ice cream sandwich, pack of 6, $4.25, Cool Bites Co.
+Pasta sauce, 700g jar, $3.80, Mama's Kitchen
+Quinoa grains, 500g bag, $4.20, Nature's Bounty
+Green tea bags, pack of 50, $5.60, Zen Moments Inc.
+Whole wheat bread, 500g loaf, $2.95, Baker's Gold
+Almond milk, 1 liter, $2.70, Nutty Goodness Inc.
+Peanut butter, 500g jar, $3.70, Nutty Spread Co.
+Instant coffee, 200g jar, $4.45, Espresso Express
+Coconut water, 1 liter, $2.80, Tropical Bliss
+Gluten-free pasta, 500g pack, $3.60, Pure Eats Inc.
+Granola cereal, 700g box, $6.20, Crunchy Mornings Co.
+Organic apple juice, 1 liter, $4.00, Fruity Sip Inc.
+Vegetable broth, 1 liter carton, $2.95, Veggie Delights
+Garlic bread, pack of 2, $3.40, Artisan Bakeries
+Caramel popcorn, 200g bag, $3.80, Poppy's Popcorn
+Chia seeds, 300g package, $5.45, Healthy Living
+Dark chocolate bar, 100g, $2.30, Cocoa Luxe Co.
+Vanilla soy milk, 1 liter, $3.10, Soy-n-Joy Inc.
+Dehydrated mango strips, 200g bag, $6.50, Tropical Snacks
+Crispy wheat crackers, 400g box, $4.00, Snack & Happy
+Spicy salsa sauce, 350g jar, $3.75, Fiesty Flavors Inc.
+Black olive tapenade, 200g jar, $5.20, Mediterranean Olives Co.
+Cherry-flavored yogurt, pack of 4, $3.95, Happy Spoon Inc.
+Gluten free almond cookies, 300g box, $5.60, Gluten Free Galore
+Artichoke hearts in brine, 400g jar, $4.30, Garden's Treasure
+GINGER-INFUSED WATER, 1 liter, $3.20, Zing by Nature
+Multigrain Bread, 680g Bag, $3.20, Baker's Select
+Organic Apples, 1lb Bag, $2.99, Eden Orchard
+Soy Milk, 1.89 liters, $3.99, Soya Goodness
+Roasted Almonds, 250g Packet, $5.50, Nutty Planet
+Quinoa Pasta, 500g Packet, $3.70, Vital Vittles
+Tomato Ketchup, 450g Bottle, $2.95, Flavor Blast
+Sweet corn Soup, 500ml Can, $1.79, Campbell Fresh
+Parmesan Cheese, 8 oz Pack, $4.70, Dairy Delight
+Sparkling Water, 1.25 liters, $1.95, Aquatic Waves
+Tamari Sauce, 300ml Bottle, $3.49, Taste of Japan
+Jalapeno Salsa, 450g Jar, $4.15, Fiesta Flavors
+Wheat Cereal, 15.5 oz Box, $3.70, Morning Munchie
+Fruit Bars, 10 Bars Box, $4.20, Nutriloops
+Whole Grain Crackers, 250g Box, $3.15, Davis Mill
+Organic Tea bags, 25 count Box, $5.99, Tealicious
+Veggie Chips, 5 oz Bag, $2.95, Crispy Curls
+Apple Juice, 2 liters, $2.99, Eden Orchard
+Chia Seeds, 1lbs Bag, $5.50, Nature's Bounty
+Maple Syrup, 500ml Bottle, $6.99, Sweet Forest
+Coconut Oil, 500ml Jar, $7.99, Coco Heaven
+Dark Chocolate Bar, 3.5 oz Packet, $2.75, ChocoTreat
+Pure Honey, 500g Jar, $7.50, Bee's Gold
+Green Olive Spread, 180g Jar, $4.99, Taste of Mediterranean
+Marinated Artichokes, 1lb Jar, $5.99, Bella Italia
+Walnut Butter, 10 oz Jar, $6.49, Nutty Delight
+Pumpkin Spice Coffee, 12 oz Bag, $7.99, Brew Morning
+Low-Fat Yogurt, 1lbs Tub, $2.69, Dairy Good
+Gluten-Free Cookies, 5.3 oz Box, $4.15, GlutenNoMore
+Frozen Veggie Pizza, 405g Box, $6.89, Trattoria Prima
+Lemon Soda, 2 liters, $2.10, Fizzy Drops
+Crunchy chocolate cookies, 250 grams, $3.79, Coco Delights
+Organic apple cider, 1 liter, $4.55, Orchard Bliss
+Roasted almond butter, 400 grams, $6.10, Almo Naturals
+Gluten-free pasta, 500 grams, $2.75, Gluten-Free Goodies
+Low-sodium canned tomatoes, 794 grams, $1.50, Health Plus
+Premium black coffee beans, 500 grams, $7.75, Brew Master
+Red velvet ice cream, 1 liter, $5.49, Cream Heaven
+Green tea bags, pack of 25, $4.29, Zen Infusions
+Honey oat cereal, 450 grams, $3.99, Sunny Mornings
+Fresh corn tortillas, pack of 10, $1.15, Fiesta Time
+Extra virgin olive oil, 500 ml, $6.40, Oliva Pura
+Dried figs snack pack, 200 grams, $3.75, Nature's Treat
+Toasted sesame seeds, 300 grams, $3.25, Oriental Accents
+Garlic salt seasoning, 120 grams, $2.65, Kitchen Staples
+Cinnamon roll mix, 400 grams, $3.79, Baker's Joy
+Roasted seaweed sheets, pack of 25, $4.99, Sea Harvest
+Organic protein bars, pack of 6, $7.50, Protein Power
+Vegetable stock cubes, pack of 12, $2.00, Soup Supreme
+Low-fat Greek yogurt, 500 grams, $3.90, Greek Delight
+Brown sugar, 500 grams, $1.65, Sweet Harmony
+Shredded coconut, 300 grams, $2.80, Tropical Essence
+Quinoa and oat granola, 400 grams, $5.50, Healthy Start
+Apple cider vinegar, 500 ml, $2.65, Pure Benefits
+Ghee clarified butter, 500 grams, $8.25, Golden Glow
+Frozen mixed berries, 500 grams, $4.00, Fruit Symphony
+Whole wheat bread, 400 grams, $2.45, Wholesome Loaf
+Ranch dressing, 350 ml, $3.15, Salad Sensations
+Sparkling water, 1.5 liters, $1.40, Crystal Flow
+Dark chocolate bar, 100 grams, $2.85, Choco Dream
+Purple grape juice, 1 liter, $3.60, Vineyard Fresh
+Oatmeal Cereal, 500 grams box, $3.50, Oats Supreme
+Banana Yogurt, 200 grams, $1.25, Banana Bungalow
+Freshly Baked Bread, 500 grams, $2.10, BakeMaster
+Spaghetti Pasta, 1 kilogram, $1.99, Pasta Paradiso
+Whole wheat Flour, 2 kilograms, $3.75, Whole Wonder
+Extra Virgin Olive Oil, 1 liter bottle, $7.59, Oil Royale
+Low-Fat Cheese, 250 grams, $3.99, Cheese Cloud
+Almond Butter, 400 grams jar, $6.99, Almond Appeal
+Raspberry Jam, 300 grams jar, $2.25, Berry Dream
+Green Tea Bags, 20 pack, $3.50, Tea Travels
+Natural Mineral Water, 1 liter, $0.95, Aqua Pure
+Red Table Wine, 750 ml, $9.14, Vine Veneration
+Organic Brown Eggs, dozen, $3.50, Orchid Organics
+Choco-Chip Cookies, 450 grams, $4.99, Crunchy Comfort
+Salted Pretzels, 200 grams bag, $1.70, Snack Sensation
+Quinoa Crackers, 300 grams, $2.95, Earth Eats
+Spicy Tomato Sauce, 500 grams, $3.39, Spice Surprise
+Orchard Apple Juice, 1 liter, $4.00, Apple Ambrosia
+Sunflower Honey, 250 grams, $3.79, Sunny Fields
+Root Salad Mix, 500 grams, $2.50, Veggie Victory
+Coconut Milk, 250 ml, $1.50, Coconut Crown
+Vanilla Ice Cream, 1 liter, $4.50, Vanilla Valley
+Dark Roast Coffee, 500 grams, $9.79, Morning Majesty
+Premium Dog Food, 3 kilogram, $15.99, Royal Bark
+Aluminium Foil, 20 meters, $1.70, Shiny Shield
+Crisp Pineapple Slices, 800 grams can, $2.99, Tropical Thrill
+Rosemary Plant Herbs, 20 grams, $2.29, Herb Highness
+Unsalted Pistachios, 500 grams, $8.50, Nature's Nut
+Full Cream Yogurt, 500 grams, $3.29, Spoonful of Silk
+Low-Carb Protein Bars, box of 6, $9.99, Fitness Fuel
+Wholegrain Cereal, boxed, $4.00, Grainy Goodness
+Organic Pasta, bag, $3.10, Green Earth Produce
+Unsalted Butter, wrapped, $1.99, Creamy Classics
+Blueberry Jam, jar, $4.50, Berry Delight
+Dark Chocolate Bar, wrapped, $2.30, ChocoLux
+Garlic Bread, bag, $1.50, Baked Best
+Coconut Water, 1 liter, $3.20, Tropical Drops
+Raspberry Yoghurt, tub, $2.75, Smooth Fridge
+Almond Milk, carton, $2.48, NutriNuts
+Microwave Popcorn, bag, $1.80, Poppable Joy
+Olive Oil, 500 ml, $6.99, Golden Harvest
+Sesame Crackers, box, $3.30, Snackers Galore
+Apple juice, 1 liter, $3.10, Juicy Burst
+Vegetable Chips, bag, $2.50, Crunchy Nature
+Gluten-free Pancake Mix, N/A, $4.80, Good Belly
+BBQ Sauce, bottle, $2.99, Southern Flavor
+Strawberry Cheesecake Ice Cream, tub, $5.00, Sundae Bliss
+Pack of Hotdogs, sealed, $4.25, Grill Masters
+Pack of Blue Cheese, plastic wrap, $3.95, Cheese Gallery
+Shrimp, Frozen Bag, $6.45, Sea Treasure
+Sriracha Mayonnaise, jar, $3.00, Spicy Moments
+Passionfruit Soda, can, $1.10, Fizzed Out
+Low-fat Cottage Cheese, tub, $2.75, HealthSure
+Alcohol Wipes, pack, $1.70, CleanQuick
+Disposable Razors, pack, $3.80, Smooth Shave
+Multi-grain Bread, bag, $2.80, Baked Delite
+Roasted Cashew Nuts, bag, $3.50, Nutty Crunch
+Toothpaste, 100g tube, $2.25, Sparkling Smile
+Aluminum Foil, roll, $2.00, Silver Sheen
+Dish Soap, bottle, $2.99, CleanDish
\ No newline at end of file
diff --git a/src/retailtwin/data/random_people.csv b/src/retailtwin/data/random_people.csv
new file mode 100644
index 0000000..23c59c5
--- /dev/null
+++ b/src/retailtwin/data/random_people.csv
@@ -0,0 +1,1001 @@
+name,middlename,surname
+Courtney,Lee,Dougherty
+Matthew,Brian,Goodman
+Joseph,Thomas,Fields
+Ryan,Brenda,Norman
+Joseph,Ronnie,Diaz
+Nicholas,Antonio,Little
+Rebecca,Chelsea,Novak
+Andrea,Catherine,Dyer
+Jennifer,Mark,Ford
+Ana,Samuel,Morgan
+Kristin,Natasha,Molina
+Paula,Kathryn,Ellison
+Gail,Susan,Short
+Ashley,Richard,Collins
+Cristina,Bruce,Stephens
+Lisa,Christine,Morales
+Ricardo,Megan,Robbins
+Angela,Jackie,Reed
+Tyler,Kevin,Adams
+Jared,Andrew,Garcia
+Maria,Wendy,Lopez
+Molly,Chad,Lloyd
+Paige,Steven,Rodriguez
+Yvette,Heidi,Perkins
+Cheryl,Amy,Smith
+Alicia,Lisa,Anderson
+Paula,Steven,Montgomery
+Cheyenne,William,Macias
+Thomas,Kristopher,Vargas
+Todd,Kelsey,Smith
+Eric,Jason,Parker
+Bryan,Andrea,Ryan
+Whitney,Abigail,Stevens
+Jaime,Tamara,Smith
+Stephen,Ryan,Rodriguez
+Paul,Eric,Lewis
+Sara,Megan,Mack
+Heather,Troy,Villanueva
+Bailey,Jamie,Bond
+Michael,Bailey,Sanchez
+Darlene,Pamela,Trevino
+Kelli,Nicholas,Bailey
+Ashley,Pamela,Horne
+Mackenzie,Valerie,Howard
+Johnathan,Robert,Norris
+Yvonne,Cole,Molina
+Michelle,Philip,Sanders
+Paula,Peter,Reed
+Shannon,Anthony,Campos
+Barbara,Natasha,Ferrell
+John,Janet,Quinn
+Michele,Michael,Macias
+Gary,Kelly,Martin
+Sherry,Christine,Lee
+Alan,Ann,Vazquez
+Pamela,John,Rivera
+Stephanie,Kayla,Jones
+Stacy,Jared,Barrett
+Marvin,Janice,Jenkins
+Kim,Veronica,Kim
+Joy,Amanda,Mercer
+Angela,Lorraine,Conner
+Timothy,Amanda,Myers
+John,Matthew,Franklin
+Stacey,Kimberly,Lindsey
+Daniel,Daniel,Tran
+Meghan,Melanie,Carter
+Michael,Mark,Davis
+Amanda,Gloria,Robertson
+Austin,Edward,Eaton
+Cynthia,Patrick,Gross
+Penny,Keith,Thompson
+Julia,William,Stafford
+Madison,Richard,Johnson
+David,Alexa,Walsh
+Scott,Daniel,Gray
+Megan,Tiffany,Wells
+Monica,Elizabeth,Chapman
+Raven,James,Manning
+Jamie,Julia,Lynch
+Richard,Laura,Lin
+Steven,Marissa,Cooper
+Ryan,Nicolas,Stone
+Scott,Edward,Pace
+Christopher,Jonathan,Bishop
+Barbara,Nicholas,Shaw
+Donald,Alexandria,Juarez
+Travis,James,Ortega
+Thomas,Ashley,Mcintyre
+Mary,David,Shepherd
+Garrett,Leonard,King
+Michael,Kimberly,Skinner
+James,Amy,Lee
+Gary,Elizabeth,Gonzalez
+Michael,Danielle,Davis
+Laura,Jamie,Scott
+Martha,Ricardo,Lee
+Heather,Jennifer,Anderson
+Peter,Robert,Smith
+Jamie,Rebecca,Ramos
+Patricia,Brandon,Valdez
+Alicia,Maureen,Silva
+Tara,Alexander,Campbell
+Adam,Tammy,Kelly
+Robert,Mary,Cohen
+Brittany,Stacy,Foster
+Christina,Amanda,Hernandez
+Janet,Lori,Watkins
+Richard,Danielle,Turner
+William,Vanessa,Scott
+Kimberly,Edward,Barron
+Peter,Jessica,Cooper
+Morgan,Karen,Davis
+Savannah,Kristin,Williams
+Micheal,George,Ward
+Joan,Christopher,White
+Angela,Pamela,Salazar
+Rachael,Brandy,Valenzuela
+Mary,Laura,Mcgee
+Cynthia,Raymond,Lloyd
+Allison,Nathaniel,Peters
+Evelyn,Lisa,Boyer
+Melissa,Jessica,Ward
+John,Brittany,Scott
+Steven,Paul,Hayes
+Veronica,Margaret,Mcgee
+Ashley,Kim,Anderson
+Amber,Lydia,Warner
+Erin,Brian,Henry
+Amanda,Charles,Davis
+Sarah,Chelsea,Jones
+Caitlin,Teresa,Hahn
+Rachael,Denise,Washington
+Leah,Bianca,Watkins
+Jillian,Anne,Briggs
+Harold,Kristina,Hernandez
+Desiree,Zachary,Kelly
+Rachel,David,Love
+Diane,Lisa,Cowan
+Adrian,Kiara,Lane
+Erica,Laura,Kennedy
+Victoria,Jessica,Johnson
+Edgar,Craig,Mathis
+Wendy,Daniel,Barnes
+David,John,Powell
+Danny,Stephanie,Cole
+Stephanie,Sarah,Merritt
+Patty,Kendra,Harper
+Ryan,Kevin,Brown
+Jennifer,Timothy,Huber
+Debra,Austin,Gross
+Barbara,Cassandra,Woods
+Randy,Adam,Lloyd
+Debra,Sean,Wiley
+Mark,Albert,Sawyer
+Randall,Sara,Craig
+Shannon,Michele,Cisneros
+Ryan,Robert,Thompson
+Laurie,Phyllis,Richardson
+Justin,Michael,Gordon
+Melissa,Christopher,Martinez
+Edward,Brittany,Baker
+Bobby,Katie,Barton
+Tyler,Janice,Tucker
+Catherine,Keith,Lee
+Thomas,Patricia,Wiggins
+Regina,Crystal,Robinson
+Tina,Norma,Wallace
+Timothy,Taylor,Davis
+Tara,Megan,Chan
+Paul,Andrew,Salazar
+Carla,Cindy,Lara
+April,Alicia,Morris
+James,Eric,Hughes
+Karen,Gerald,Friedman
+Wendy,Pamela,Williams
+Sarah,Phillip,Gilbert
+Emma,Richard,Tran
+Gavin,Ronald,Figueroa
+Amber,Carmen,Roth
+Robert,Michael,Bates
+Paul,Wesley,Allen
+Rachel,Bruce,Marks
+Michael,Thomas,Carter
+Sonya,Carla,Stone
+Leslie,David,Rose
+Robert,Shirley,Hayes
+Megan,Travis,Hernandez
+Stephanie,Michael,Moore
+Lindsey,George,Meyer
+Melissa,Jennifer,Perez
+Angel,Grace,Mack
+Penny,Matthew,Long
+Jasmine,Charles,Torres
+Brianna,Laura,Neal
+Joshua,Gary,Armstrong
+Jonathon,Willie,Lee
+Cynthia,Phillip,Turner
+John,Teresa,Willis
+Christopher,Lisa,Smith
+Dalton,Lauren,Farmer
+Sara,Diana,Wood
+Stephanie,Steven,Flores
+Michelle,Jeffrey,Rivas
+Katherine,Maurice,Jones
+Julia,Mary,Anthony
+James,Megan,Shah
+Alan,Terri,Greene
+Michael,Jennifer,Garcia
+Donald,Megan,Nelson
+James,Tyler,Mcintyre
+Deanna,Daniel,Martin
+Mary,Jessica,Liu
+Matthew,Frank,Smith
+Tammie,Adam,Cummings
+Gregory,Lisa,Roth
+James,Larry,Carney
+Cheryl,Arthur,Delgado
+Molly,Brandi,Wilson
+Jeffrey,Kimberly,Hughes
+Danielle,Wendy,Allen
+Brian,David,Chavez
+Barbara,Veronica,Butler
+Alisha,Karen,Simon
+Samuel,Jonathan,Miller
+Theresa,Jesse,Mitchell
+Brenda,Joe,Smith
+Christine,Ryan,Evans
+Douglas,Brandon,Dodson
+Dominic,Jasmine,Rodriguez
+Hector,Thomas,Mckee
+Melissa,Mackenzie,Willis
+Brianna,Katherine,Craig
+Monica,Debra,Salazar
+Matthew,Paul,Lopez
+Leslie,Charles,Ingram
+Amy,Robert,Washington
+Sarah,Benjamin,Reyes
+Aimee,Bryan,Bowen
+Wendy,Shannon,Cox
+Christopher,Gerald,Jones
+Ashley,Katherine,Turner
+Lee,Theresa,Jackson
+Michelle,Aaron,Smith
+Jennifer,Austin,Pierce
+Martha,Erica,Gallegos
+Laura,Rachael,Richmond
+Joshua,Cindy,Chapman
+Joseph,Kristopher,Schneider
+Richard,Matthew,Parker
+Jeremy,Kerry,Lynch
+Kevin,Richard,White
+Robert,Denise,Ware
+Patricia,Paul,Lee
+David,Cameron,Silva
+Desiree,Kathy,Wright
+Cynthia,Joshua,Mayer
+Darryl,Megan,Torres
+Lisa,Brandon,Thompson
+Jeffrey,Donna,Garcia
+Hannah,Dale,Nichols
+Matthew,Sharon,Rodriguez
+Christina,Kenneth,Clark
+Joseph,Denise,Ford
+Kathy,Ashley,Kemp
+Aaron,Ernest,King
+Melissa,Michael,Hunt
+John,Stephen,Sherman
+William,Larry,Nguyen
+Emma,Jeffrey,Gray
+Jon,Timothy,Jones
+William,Tracey,Henderson
+Andrew,Jose,Tapia
+John,William,Landry
+Michael,Michael,Reid
+Michelle,Allison,Richardson
+John,Brian,Smith
+Mitchell,Robert,Kim
+Tonya,Nicole,Martin
+Valerie,Benjamin,Munoz
+Joshua,William,Brooks
+Timothy,Hailey,Mccarthy
+Lauren,Maurice,Chavez
+Tom,John,Smith
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+Dawn,Adam,Brown
+Latasha,Travis,Johnson
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+Christopher,Don,Cole
+Francisco,Katrina,Nelson
+Jennifer,Rebecca,Galvan
+William,Matthew,Mendez
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+David,James,Davis
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+Amanda,Melissa,Rice
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+Anita,Colleen,Dixon
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+Jeffery,Sarah,Guzman
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+Sarah,Wayne,Lee
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+Brian,Michele,Michael
+Lisa,Angela,Martinez
+Theodore,David,Pierce
+Valerie,Cathy,Moss
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+Melissa,Lisa,Nash
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+Megan,Alicia,Baker
+Christina,Amanda,Koch
+Juan,Angel,Rivera
+Frederick,Beth,Vasquez
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+Ryan,Angel,Kirby
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+Janet,Stacy,Pacheco
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+Amber,Drew,Parker
+Anna,Christine,White
+Allen,Benjamin,Walker
+Rebecca,Stephanie,Warren
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+Thomas,Rachel,Walker
+Carly,Paula,Moss
+Sherri,Caroline,Hoover
+James,Brian,Smith
+Catherine,Patricia,Molina
+Brandon,Jasmine,Hanson
+Christine,Linda,Bell
+Kristin,Crystal,Watkins
+Chad,Kevin,Davis
+Desiree,Craig,Craig
+Allison,Daniel,Dennis
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+Austin,David,Adams
+Eric,Kimberly,Elliott
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+Dawn,Kimberly,Shelton
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+Pamela,Aaron,Bradley
+Debbie,Shannon,Curtis
+Christopher,Robin,Evans
+Michael,Matthew,Scott
+Stephanie,Christina,Vincent
+Johnny,Richard,Wallace
+Mary,Mary,Owens
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+Nancy,Wayne,Villanueva
+Alexandra,Jennifer,Singleton
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+Christine,Larry,Washington
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+David,Jason,Russell
+Angela,Carla,Rollins
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+Andrew,Scott,Watts
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+Monica,Leslie,Blackburn
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+Stephen,Alexander,Watson
+Samantha,Kathy,Rose
+Austin,Jeremy,Callahan
+Michael,Cynthia,Hanson
+Susan,Sean,Heath
+Alice,Brian,Garcia
+Paul,Shannon,Mills
+Dawn,Daniel,Burke
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+Anna,Daniel,Washington
+Heidi,Jennifer,Price
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+Nicholas,Denise,Sims
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+Robert,Brittany,Porter
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+Seth,Bobby,Brooks
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+Patricia,Robert,Vega
+Adam,Jacqueline,Jackson
+Hannah,Keith,Hill
+James,Brian,Price
+Michael,Rebecca,Pham
+Kelly,Christopher,Garza
+Frederick,Lori,Wright
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+Melissa,Robert,Mcdowell
+Daniel,Katherine,Graves
+Grant,Theodore,Martin
+Chelsea,Maria,Reed
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+Chris,Brittany,Alexander
+Benjamin,Christina,Chan
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+David,Kayla,Nichols
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+Linda,Nicholas,Davis
+Dakota,David,Sanchez
+Christopher,Elizabeth,Moore
+Kaylee,Rebecca,Williams
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+Dustin,Paul,Houston
+Kimberly,Brian,Campbell
+David,Jason,Moreno
+Yvette,Stephanie,Edwards
+Jennifer,John,Marquez
+Christopher,Amy,Carter
+Norma,Diane,Nichols
+Robert,Stephanie,Taylor
+Kyle,Ashley,Hines
+Joseph,Dennis,Webster
+Fernando,Brad,Strickland
+Jacqueline,Patrick,Beck
+Michele,Andrea,Miller
+Austin,Randall,Smith
+Luis,Mary,Hill
+Angela,James,Woodard
+Sean,Jessica,Allen
+Rebecca,Alexis,Adams
+James,Rhonda,Torres
+Teresa,Alyssa,Bell
+Joseph,Alexander,Neal
+Brandon,Mary,Moore
+Melissa,Cristian,Lewis
+Mason,Cheryl,Ferguson
+Ronald,Jaclyn,Santiago
+Tamara,Tyler,Green
+Joseph,Laura,Walker
+Katie,Emily,Cox
+Andrea,Michael,James
+Jessica,Lisa,Snyder
+Holly,Patrick,Hodge
+Michelle,Allison,Rivera
+Monica,George,Soto
+Christopher,Danny,Drake
+Mary,Bonnie,Foster
+Patrick,Maria,Barrera
+Patricia,Hannah,Williams
+Jessica,Todd,James
+Cassidy,Alexandra,Welch
+Julie,Nichole,Elliott
+Keith,Donna,Gutierrez
+Scott,Melanie,White
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+Patrick,Pedro,Malone
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+Jessica,Kimberly,White
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+Rebecca,Latoya,Turner
+Penny,Scott,Stewart
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+Amber,Elizabeth,Boyd
+Jeffrey,Mitchell,Jimenez
+Patrick,Jack,Gilmore
+John,Elaine,Gutierrez
+Cassandra,Justin,Miller
+Justin,Pamela,Lane
+James,Julie,Smith
+Michael,Michael,Harris
+Melissa,Kyle,Wood
+Carl,Brett,Dorsey
+James,Angelica,Cook
+Christopher,Dakota,Jones
+Jimmy,Martin,Krause
+Natalie,Jessica,King
+Randall,Alexandra,Osborne
+Raymond,Denise,Hill
+Thomas,Glenda,Baker
+Aaron,Janice,Scott
+Mary,James,Little
+Isaiah,David,Hodges
+Sarah,James,Long
+Johnathan,Dawn,Doyle
+Troy,Robert,Warner
+Erica,Stacie,Burns
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+Jeffrey,Anthony,Coffey
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+George,Jason,Spears
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+Albert,Sarah,Page
+Nancy,Stephen,Kelly
+Walter,Ashley,Mcmillan
+Linda,Cameron,Irwin
+David,Joshua,Patton
+Angela,Michael,Curry
+Amy,Travis,Hamilton
+Andre,Carlos,Mendoza
+Sabrina,Andrew,Oconnell
+Benjamin,Ana,Sosa
+Rose,Virginia,Shaw
+Samuel,Paul,Griffith
+Thomas,Mark,Collins
+Mary,Bradley,Price
+Patricia,Paul,Nicholson
+Wesley,James,Orr
+Rachel,Emily,Crawford
+April,Cynthia,Wilcox
+Candice,Leslie,Norris
+Linda,Kevin,Murray
+Jennifer,Daniel,Simpson
+Kurt,Joseph,Brown
+Michelle,Joshua,Acosta
+Kimberly,Anthony,Murphy
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+Deanna,Zachary,Hoover
+Elizabeth,Matthew,Pugh
+Jennifer,Nicole,Thomas
+Rebecca,Austin,Reynolds
+John,Ellen,Payne
+Matthew,David,Thompson
+Melissa,Lisa,Burke
+Gregory,Jill,Carson
+Christina,Eric,Thomas
+Donna,Stacy,Watts
+Hunter,Sherry,Pollard
+Beverly,Theresa,Jones
+Anna,Amanda,Hampton
+Daniel,Frank,Brown
+Emily,Katie,Chavez
+Peter,Nicole,Day
+Ronald,Charles,Wong
+Jennifer,Jennifer,Reyes
+Steven,Katherine,Williams
+Ricardo,Samantha,Hoffman
+Amy,Elizabeth,Campos
+Erica,Kellie,Torres
+Hannah,Kayla,Short
+Megan,Stephanie,Patterson
+Julie,James,Smith
+Jason,Cheryl,Holland
+Angela,Edward,Santos
+Scott,Andrew,Cox
+Jessica,Michael,Grant
+Justin,Donna,Jones
+Michael,Larry,Wade
+Chelsea,Randy,Garcia
+Charles,Alexander,Williams
+Brandon,Mark,Cooke
+Laura,Jeffrey,Gonzales
+Tina,Cynthia,Cunningham
+Stephanie,Michael,George
+Wendy,Danielle,Murray
+Justin,Matthew,Beasley
+Gary,Jeremy,Hill
+Kathy,Carl,Werner
+Patrick,Shelly,Hernandez
+William,David,Silva
+Heather,Steven,Gregory
+Mary,Samantha,Williams
+Kelly,Debra,Lewis
+Walter,Patricia,Rivera
+Jane,Kayla,Montgomery
+Matthew,Richard,Reynolds
+Kristen,Alexander,Norton
+John,Raymond,Williams
+Miranda,David,Cervantes
+Patricia,Ashley,Sellers
+Bradley,Joel,Smith
+Laura,Kimberly,Kelly
+Samantha,Molly,Nolan
+Aaron,John,Hampton
+Courtney,Craig,Crawford
+Jean,Samantha,Mejia
+Alexander,Michelle,Hernandez
+Yesenia,Jillian,Gill
+Kelly,Stephanie,Ramirez
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+Jesse,Wanda,Bush
+Christopher,Amanda,Morales
+Susan,Erica,Wilson
+Michelle,Joseph,Spencer
+Susan,Heather,Andersen
+Christine,Christie,Sanders
+Michael,Teresa,Curtis
+Scott,Peter,Allen
+Ricky,Tanner,Browning
+Amanda,Richard,Shah
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+Jessica,Justin,Harris
+Deborah,Francisco,Glass
+Kevin,David,Chandler
+Rebecca,Rebecca,Thompson
+Joshua,Latoya,Bush
+Leah,Jean,Hopkins
+Jonathan,Marie,Bradshaw
+Dwayne,Spencer,Rodriguez
+Juan,Jeanette,Smith
+John,Theresa,Brown
+Angela,Ashley,Gentry
+Jasmine,Rachel,Ellis
+Alan,Richard,Rivera
+Jonathan,Chad,Pitts
+Todd,Donna,Simmons
+Jacqueline,Joshua,Lopez
+Shaun,Danielle,Thompson
+Michael,Aaron,Elliott
+Felicia,Ryan,Davis
+Jamie,Carrie,Bailey
+Lucas,Harry,Cuevas
+Brooke,Dana,Gomez
+Jessica,Brian,Ford
+Jacqueline,Tamara,Wilson
+Dana,Ashley,Powell
+William,Paige,Graham
+Chase,Caitlin,Taylor
+Christopher,Krystal,Beasley
+Laurie,Erin,Wise
+Kristen,Ebony,Allen
+Thomas,Heidi,Cook
+Natasha,Patrick,Le
+Erin,Paul,Perez
+Allison,Matthew,Davis
+Barbara,Charles,Perry
+Deanna,Miranda,Zimmerman
+David,Jack,Martin
+Whitney,Evelyn,Marshall
+Jacqueline,Lisa,Carney
+Timothy,Isaiah,Nelson
+Misty,Rickey,Walker
+Dawn,Nancy,Hudson
+Mackenzie,Jenna,Baker
+James,Bonnie,Scott
+Nathaniel,Nicholas,Henson
+Nathan,Melissa,James
+Logan,Nicole,Gomez
+Alejandro,Susan,Fisher
+Shelby,Kevin,Ward
+Eric,Kelsey,Cox
+Andrew,Vanessa,Ramirez
+Jeffrey,Kimberly,Brown
+Sabrina,Shelley,Miller
+William,Andrea,Flores
+Michelle,Mary,Atkins
+Abigail,James,Hayes
+Stephanie,Danny,Howard
+Tamara,James,Watkins
+Samantha,Michael,Archer
+Sherry,Katrina,Hubbard
+Stephanie,Charles,Davis
+Gregory,Antonio,Ross
+Michael,Christopher,Yu
+Joel,Robin,Campbell
+Tammy,Tyler,Williams
+Joshua,Joshua,Barr
+Valerie,Nathan,Camacho
+Susan,Vincent,Figueroa
+Justin,Terri,Payne
+Douglas,Valerie,Rodriguez
+Robert,Lorraine,Hooper
+Anthony,Kristina,Bowers
+Peter,Sarah,Young
+April,Diana,Cantu
+Pamela,Sharon,Brown
+Katherine,Stephanie,Smith
+Nathan,James,Torres
+Theresa,Anthony,Lucas
+Michael,Brittany,Espinoza
+Brandy,Theresa,Bailey
+Amber,Mark,Rodriguez
+Michael,Natasha,Williams
+Hector,Shaun,Barnett
+Douglas,Robert,Hawkins
+Mia,Steven,Powers
+Susan,Molly,Wade
+Erik,Jennifer,Buckley
+Susan,Melissa,Duncan
+Aaron,Christopher,Figueroa
+Sharon,Michelle,Bright
+Stephanie,Wendy,Lewis
+Meghan,Martin,Pratt
+Randy,Jessica,Flores
+Teresa,Cynthia,Garcia
+Alex,Brianna,Stanley
+Brian,Heather,Harrington
+Jeffrey,Samuel,Fox
+Daisy,Penny,Wright
+Kyle,Madison,Ward
+Marie,Jeffery,Cooper
+Brittany,Carla,Nguyen
+Kimberly,Sharon,Flores
+Julie,Melanie,Lewis
+Stephanie,Jackie,Moyer
+Melissa,Holly,Small
+Barry,Jennifer,Davis
+Heather,Justin,Hill
+Aaron,Jennifer,Austin
+Heidi,Michael,Ayala
+Dana,Holly,Wilson
+Kevin,Kenneth,Simmons
+Daniel,Rebecca,Kaiser
+David,Renee,Walker
+Jessica,Holly,Moore
+Jamie,Timothy,Whitaker
+Brad,Karen,Orr
+Melissa,Emily,Watkins
+Rhonda,Matthew,Johnson
+David,Robert,Walker
+Chad,Shane,Tran
+Chris,Jasmine,Holder
+Jose,Jessica,Coffey
+Diana,Nicole,Lucas
+Emily,Hailey,Russell
+Jose,Jennifer,Vasquez
+Stephen,Jorge,Willis
+Lisa,Mary,Lopez
+Brett,Michelle,Zavala
+William,Lisa,Gregory
+Bernard,Julie,Daniels
+Derrick,Lisa,Burnett
+Kathryn,Christina,Petersen
+Cody,Bradley,Valdez
+Matthew,Thomas,Campbell
+Angela,Carla,Boyd
+Michelle,David,Krause
+Matthew,Kenneth,Ho
+Steven,Todd,Richards
+Mary,Roger,Bowen
+Denise,Joseph,Cunningham
+Christopher,Michael,Owens
+Philip,Matthew,Hess
+Andrew,Valerie,Bauer
+Dustin,Sarah,Ortiz
+Travis,Victor,James
+Karen,Michael,Leonard
+Martha,Hannah,Kline
+Madeline,Nicole,Fernandez
+April,Hannah,Herrera
+Richard,Jonathan,Barber
+Elizabeth,Roger,White
+Sheri,Laurie,Murphy
+Joshua,Linda,Rodriguez
+Thomas,Sarah,Dickerson
+Andrea,Kristina,Ramirez
+Nicholas,Michael,Bush
+Richard,Lauren,Brady
+Thomas,Tammy,Jackson
+Joseph,Mitchell,Martinez
+Eddie,Andrea,Hunt
+Johnny,Elizabeth,Dominguez
+Jill,Emily,Lambert
+Philip,Erika,Young
+Jennifer,Benjamin,Castillo
+Shannon,Stephanie,Singleton
+Megan,Katie,Nguyen
+Amy,Diana,Garcia
+Kimberly,Ricardo,Kelly
+Samuel,Anna,Thompson
+Amanda,Steven,Bruce
+John,Jason,Schroeder
+Joshua,Kevin,Stewart
+Billy,Melinda,Snyder
+Joshua,Maria,Herman
+Anthony,John,Baldwin
+Samantha,Steven,Moreno
+Andrea,Michael,Spencer
+Crystal,Crystal,Mcgee
+Christopher,Joshua,Ingram
+Edward,Richard,Harrison
+Rachel,Douglas,Cook
+David,Patricia,Sullivan
+Anthony,Brendan,Jordan
+Nichole,Sharon,Jenkins
+Stephanie,Shelia,Barry
+Michelle,Michael,Daniels
+Michael,Jonathan,Ford
+Matthew,Scott,Parker
+Antonio,Jeffrey,Santana
+Jordan,Michael,Simpson
+Rebecca,Justin,Leonard
+Jorge,Kimberly,Frank
+Martin,Justin,Reed
+Terry,Bianca,Lowe
+Jessica,Spencer,Thornton
+Gavin,Rebecca,Sparks
+Cindy,Robert,Bell
+Tyler,David,King
+Tyler,Taylor,Irwin
+Charles,Kristen,Rose
+Crystal,Kayla,Lee
+Lisa,Karen,Rose
+Craig,Rebecca,Johnson
+Courtney,Jessica,Hicks
+Edward,Vincent,Brock
diff --git a/src/retailtwin/models.py b/src/retailtwin/models.py
new file mode 100644
index 0000000..af339ce
--- /dev/null
+++ b/src/retailtwin/models.py
@@ -0,0 +1,160 @@
+from datetime import datetime
+from decimal import Decimal
+from typing import Dict
+
+from sqlalchemy import JSON, BigInteger, ForeignKey, Numeric, String
+from sqlalchemy.ext.asyncio import AsyncAttrs
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, relationship
+
+__all__ = [
+    "Base",
+    "Item",
+    "Provider",
+    "Order",
+    "LocationType",
+    "Location",
+    "ItemBatch",
+    "Discount",
+    "Customer",
+    "Cart",
+    "ItemOnShelf",
+]
+
+
+class Base(AsyncAttrs, DeclarativeBase):
+    pass
+
+
+class Provider(Base):
+    __tablename__ = "providers"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str]
+    address: Mapped[str]
+    phone: Mapped[str]
+    vat: Mapped[str]
+
+    def __repr__(self) -> str:
+        return f"<Provider ({self.name}) at {hex(id(self))}>"
+
+
+class Item(Base):
+    __tablename__ = "items"
+    sku: Mapped[int] = mapped_column(primary_key=True)
+    upc: Mapped[int] = mapped_column(BigInteger, nullable=False)
+    provider: Mapped[int] = mapped_column(ForeignKey("providers.id"))
+    name: Mapped[str] = mapped_column(nullable=False)
+    package: Mapped[str] = mapped_column(unique=False)
+    current: Mapped[bool] = mapped_column(
+        comment="True if the item can be still requested to a provider, "
+        "False if it has been discontinued"
+    )
+    # unit_weight: Mapped[int] = mapped_column(
+    #    comment="Unit weight in grams not including additional packaging"
+    # ) To be added as exercise
+    volume_unpacked: Mapped[int] = mapped_column(
+        comment="Volume of the item unpacked in cubic decimeters"
+    )
+    volume_packed: Mapped[int] = mapped_column(
+        comment="Volume of each unit item when packaged in cubic decimeters"
+    )
+
+    def __repr__(self) -> str:
+        return f"<Item {self.name} at {hex(id(self))}>"
+
+
+class Order(Base):
+    __tablename__ = "orders"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    sku: Mapped[int] = mapped_column(ForeignKey("items.sku"))
+    placed: Mapped[datetime]
+    qty: Mapped[int] = mapped_column(nullable=False)
+    provider: Mapped[int] = mapped_column(ForeignKey("providers.id"))
+
+
+class LocationType(Base):
+    __tablename__ = "locationtypes"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str]
+    retail: Mapped[bool]
+
+
+class Location(Base):
+    __tablename__ = "locations"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    loctype: Mapped[int] = mapped_column(ForeignKey("locationtypes.id"))
+    name: Mapped[str]
+    capacity: Mapped[int]
+
+
+class ItemBatch(Base):
+    __tablename__ = "batches"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    lot: Mapped[str] = mapped_column(String(128), nullable=False)
+    order: Mapped[str] = mapped_column(ForeignKey("orders.id"), nullable=True)
+    received: Mapped[datetime] = mapped_column(nullable=True)
+    unit_cost: Mapped[Decimal] = mapped_column(Numeric(9, 2), nullable=False)
+    price: Mapped[Decimal] = mapped_column(Numeric(9, 2), nullable=False)
+    best_until: Mapped[datetime]
+    quantity: Mapped[int]
+    sku: Mapped[id] = mapped_column(ForeignKey("items.sku"))
+    item: Mapped[Item] = relationship()
+
+
+class Discount(Base):
+    __tablename__ = "discounts"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str] = mapped_column(unique=True, nullable=False)
+    definition: Mapped[Dict[str, Dict[str, int]]] = mapped_column(JSON, nullable=True)
+
+    def __repr__(self) -> str:
+        return f"Type: {self.name} at {id(self)}"
+
+
+class TaskOwner(Base):
+    __tablename__ = "taskowners"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str] = mapped_column(unique=True, nullable=False)
+
+
+class Task(Base):
+    __tablename__ = "tasks"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    taskowner: Mapped[int] = mapped_column(ForeignKey("taskowners.id"), nullable=False)
+    location: Mapped[int] = mapped_column(ForeignKey("locations.id"), nullable=False)
+    sku: Mapped[int] = mapped_column(ForeignKey("items.sku"), nullable=False)
+    description: Mapped[str]
+
+
+class Customer(Base):
+    __tablename__ = "customers"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    document: Mapped[str] = mapped_column(nullable=False)
+    info: Mapped[Dict[str, str]] = mapped_column(JSON, nullable=True)
+
+
+class Cart(Base):
+    __tablename__ = "carts"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    checkout: Mapped[datetime] = mapped_column(nullable=True)
+    location: Mapped[int] = mapped_column(ForeignKey("locations.id"), nullable=False)
+    customer: Mapped[int] = mapped_column(ForeignKey("customers.id"), nullable=True)
+
+
+class ItemOnCart(Base):
+    __tablename__ = "itemsoncart"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    cart: Mapped[int] = mapped_column(ForeignKey("carts.id"), nullable=False)
+    upc: Mapped[int] = mapped_column(nullable=False)  # Not FK to avoid sync issues
+    quantity: Mapped[int] = mapped_column(nullable=True)
+    unitprice: Mapped[Decimal] = mapped_column(Numeric(9, 2), nullable=True)
+    discount: Mapped[Decimal] = mapped_column(Numeric(9, 2), nullable=True)
+
+
+class ItemOnShelf(Base):
+    __tablename__ = "itemsonshelf"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    batch: Mapped[int] = mapped_column(ForeignKey("batches.id"), nullable=True)
+    discount: Mapped[int] = mapped_column(ForeignKey("discounts.id"), nullable=True)
+    quantity: Mapped[int] = mapped_column(nullable=False)
+    location: Mapped[int] = mapped_column(ForeignKey("locations.id"), nullable=False)
+    batches: Mapped[ItemBatch] = relationship()
diff --git a/src/retailtwin/simulation.py b/src/retailtwin/simulation.py
new file mode 100644
index 0000000..123971b
--- /dev/null
+++ b/src/retailtwin/simulation.py
@@ -0,0 +1,44 @@
+from datetime import datetime
+from random import choice
+
+import polars as pl
+from scipy.stats.distributions import lognorm
+from sqlalchemy.orm import Session
+
+from dengfun.retail.models import Cart
+
+
+def cart(session: Session) -> Cart:
+    db_uri = str(session.get_bind().url.render_as_string(hide_password=False))
+
+    customer = pl.read_database("select random_customer()", db_uri, engine="adbc")[0, 0]
+    location = pl.read_database("select random_location()", db_uri, engine="adbc")[0, 0]
+    cart = Cart(customer=customer, location=location, checkout=datetime.now())
+    session.add(cart)
+    session.commit()
+
+    # Budget can be a small or a large expenditure
+    budget = choice([10 * lognorm.rvs(0.25), 100 * lognorm.rvs(0.25)])
+    items = pl.read_database("select * from items", db_uri, engine="adbc")
+    spent = 0
+    while spent > budget:
+        quantity = choice([1, 2, 3, 4])
+        item = items.sample(1, shuffle=True)
+        price = pl.read_database(
+            "select price_on_location({id}, {qty})", db_uri, engine="adbc"
+        )[0, 0]
+        session.execute(
+            f"add_item_to_cart({cart.id}, {item.sku}, {quantity}, {location})"
+        )
+        session.commit()
+        spent += price
+
+
+if __name__ == "__main__":
+    from sqlalchemy import create_engine
+    from sqlalchemy.orm import Session
+
+    with Session(
+        create_engine("postgresql://postgres:postgres@localhost/retail", echo=True)
+    ) as session:
+        cart(session)
diff --git a/src/retailtwin/sql/__init__.py b/src/retailtwin/sql/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/retailtwin/sql/add_item_to_cart.sql b/src/retailtwin/sql/add_item_to_cart.sql
new file mode 100644
index 0000000..a254586
--- /dev/null
+++ b/src/retailtwin/sql/add_item_to_cart.sql
@@ -0,0 +1,9 @@
+create or replace procedure add_item_to_cart(cart integer, sku integer, quantity integer)
+language sql
+as
+$$
+INSERT INTO itemsoncart
+("cart", "sku", "quantity")
+values
+($1, $2, $3);
+$$;
\ No newline at end of file
diff --git a/src/retailtwin/sql/checkout_cart.sql b/src/retailtwin/sql/checkout_cart.sql
new file mode 100644
index 0000000..df460dd
--- /dev/null
+++ b/src/retailtwin/sql/checkout_cart.sql
@@ -0,0 +1,6 @@
+create or replace procedure checkout_cart(cart integer)
+language sql
+as
+$$
+
+$$;
\ No newline at end of file
diff --git a/src/retailtwin/sql/fetch_from_shelf.sql b/src/retailtwin/sql/fetch_from_shelf.sql
new file mode 100644
index 0000000..ed83313
--- /dev/null
+++ b/src/retailtwin/sql/fetch_from_shelf.sql
@@ -0,0 +1,15 @@
+create or replace function fetch_from_shelf(sku integer, loc integer)
+  returns integer
+language sql as
+$$
+  select
+    min(itemsonshelf.id) as id
+  from
+    "batches"
+  join
+    itemsonshelf
+  on
+    "batches".id = itemsonshelf.batch
+  where
+    itemsonshelf.location = $2 and "batches".sku = $1;
+$$;
diff --git a/src/retailtwin/sql/price_on_location.sql b/src/retailtwin/sql/price_on_location.sql
new file mode 100644
index 0000000..84b1c09
--- /dev/null
+++ b/src/retailtwin/sql/price_on_location.sql
@@ -0,0 +1,14 @@
+create or replace function price_on_location(sku integer, loc integer)
+  returns Numeric(9,2)
+language sql as
+$$
+  select max(price) as unit_price  -- Maximum price for all batches.
+  from                             -- Only discounts can reduce
+    "batches"                      -- the price of an item on the cart
+  join
+    itemsonshelf
+  on
+    "batches".id = itemsonshelf.batch
+  where
+    itemsonshelf.location = $2 and "batches".sku = $1
+$$;
\ No newline at end of file
diff --git a/src/retailtwin/sql/random_available_on_location.sql b/src/retailtwin/sql/random_available_on_location.sql
new file mode 100644
index 0000000..271affc
--- /dev/null
+++ b/src/retailtwin/sql/random_available_on_location.sql
@@ -0,0 +1,27 @@
+create or replace function random_available_on_location(loc integer)
+  returns integer
+language sql as
+$$
+  with valid as
+  (
+    select
+        batch
+      from
+        itemsonshelf
+      where
+        itemsonshelf.location = $1 and itemsonshelf.quantity > 0
+      order by
+        random()
+      limit 1
+  )
+  select
+    "batches".sku as sku
+  from
+    valid
+  join
+    "batches"
+  on
+    "batches".id = valid.batch
+  limit
+    1;
+$$;
diff --git a/src/retailtwin/sql/random_cart_on_location.sql b/src/retailtwin/sql/random_cart_on_location.sql
new file mode 100644
index 0000000..2e32348
--- /dev/null
+++ b/src/retailtwin/sql/random_cart_on_location.sql
@@ -0,0 +1,38 @@
+create or replace function random_cart_on_location(loc integer, lim integer)
+  returns table(sku integer, unit_price numeric(9,2), item_id integer, discount integer)
+language sql as
+$$
+  with
+    items
+  as
+    (
+      select
+        id,
+        random_available_on_location($1) as sku
+      from
+        generate_series(0, $2) id
+    ),
+  stock as
+    (
+    select
+      sku,
+      price_on_location(sku, $1) as unit_price,
+      fetch_from_shelf(sku, $1) as item_id
+    from
+      items
+    limit
+      $2
+    )
+  select
+    sku,
+    unit_price,
+    item_id,
+    discount
+  from
+    stock
+  join
+    itemsonshelf
+  on
+    stock.item_id = itemsonshelf.id
+    ;
+$$;
diff --git a/src/retailtwin/sql/retire_batch_from_shelves.sql b/src/retailtwin/sql/retire_batch_from_shelves.sql
new file mode 100644
index 0000000..e74bf73
--- /dev/null
+++ b/src/retailtwin/sql/retire_batch_from_shelves.sql
@@ -0,0 +1,22 @@
+CREATE OR REPLACE FUNCTION retire_batch_from_shelves(batch_ integer, location_ integer)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  taskowner integer := id from taskowners where "name" = 'stocker';
+  sku integer := sku from itemsonshelf s join "batches" b on s.batch = b.id where b.id = batch_;
+BEGIN
+UPDATE
+  itemsonshelf
+SET
+  quantity = 0
+WHERE
+  batch = batch_
+  AND "location" = location_;
+INSERT INTO
+  tasks
+  ("location", sku, taskowner, "description")
+VALUES
+  (location_, sku, taskowner, format('Retire batch %s', batch_));
+END;
+$$;
diff --git a/src/retailtwin/sql/select_random_customer.sql b/src/retailtwin/sql/select_random_customer.sql
new file mode 100644
index 0000000..c38a9ff
--- /dev/null
+++ b/src/retailtwin/sql/select_random_customer.sql
@@ -0,0 +1,7 @@
+create or replace function random_customer()
+  returns integer
+as $$
+  SELECT id
+  FROM customers TABLESAMPLE SYSTEM(1)
+  LIMIT 1;
+$$ language sql;
\ No newline at end of file
diff --git a/src/retailtwin/sql/select_random_location.sql b/src/retailtwin/sql/select_random_location.sql
new file mode 100644
index 0000000..e756ff0
--- /dev/null
+++ b/src/retailtwin/sql/select_random_location.sql
@@ -0,0 +1,8 @@
+create or replace function random_location()
+  returns integer
+as $$
+  SELECT id
+  FROM locations
+  ORDER BY random()
+  LIMIT 1;
+$$ language sql;
\ No newline at end of file
diff --git a/src/retailtwin/sql/stock_on_location.sql b/src/retailtwin/sql/stock_on_location.sql
new file mode 100644
index 0000000..90e8a50
--- /dev/null
+++ b/src/retailtwin/sql/stock_on_location.sql
@@ -0,0 +1,16 @@
+create or replace function stock_on_location(sku integer, loc integer)
+  returns integer
+language sql as
+$$
+  select
+    -- Sum quantities from all the batches available in location
+    sum(itemsonshelf.quantity)
+  from
+    itemsonshelf
+  join
+    "batches"
+  on
+    "batches".id = itemsonshelf.batch
+  where
+    "batches".sku = $1 and itemsonshelf.location = $2
+$$
diff --git a/src/retailtwin/sql/sync.py b/src/retailtwin/sql/sync.py
new file mode 100644
index 0000000..d57cbd9
--- /dev/null
+++ b/src/retailtwin/sql/sync.py
@@ -0,0 +1,37 @@
+from pathlib import Path
+from sqlalchemy import create_engine, text
+from sqlalchemy.orm import Session
+import dengfun
+
+PACKAGE_ROOT = Path(dengfun.__file__).parent / "retail"
+
+
+def funcandproc(db_uri: str):
+    """Write functions and procedures into the given Postgresql database
+
+    Args:
+        db_uri (str): _description_
+    """
+    engine = create_engine(db_uri, echo=True)
+
+    with Session(engine) as session:
+        # Functions can be redefined in postgresql
+        for predicate in (PACKAGE_ROOT / "sql").glob("*.sql"):
+            print(f"Syncing {predicate}")
+            with predicate.open() as sql:
+                session.execute(text(sql.read()))
+                session.commit()
+
+        # Views have to be recreated if schema changes
+        for predicate in (PACKAGE_ROOT / "sql" / "views").glob("*.sql"):
+            print(f"Syncing view in {predicate}")
+            # Get view name from the file name
+            view_name = predicate.stem.removesuffix(".sql")
+            with predicate.open() as sql:
+                # First remove the view
+                session.execute(text(f"drop view {view_name}"))
+                session.commit()
+
+                # And sync it
+                session.execute(text(sql.read()))
+                session.commit()
diff --git a/src/retailtwin/sql/views/README.md b/src/retailtwin/sql/views/README.md
new file mode 100644
index 0000000..91b5fd2
--- /dev/null
+++ b/src/retailtwin/sql/views/README.md
@@ -0,0 +1,3 @@
+This folder hosts view definitions.
+
+The name of the file must correspond to the name of the view, since it's used to create or update the definition
\ No newline at end of file
diff --git a/src/retailtwin/sql/views/inventory.sql b/src/retailtwin/sql/views/inventory.sql
new file mode 100644
index 0000000..41a5d4c
--- /dev/null
+++ b/src/retailtwin/sql/views/inventory.sql
@@ -0,0 +1,18 @@
+create or replace view inventory as (
+		select it.upc as upc,
+			b.id as batch,
+			it.name as name,
+			it.package as package,
+			to_char(b.price, '999.99') as unitprice,
+			-- It's fine to encode numerics as strings
+			date(b.received at time zone 'UTC') as received,
+			date(b.best_until at time zone 'UTC') as best_until,
+			i.quantity as quantity,
+			i."location" as "location",
+			d.definition::text as discount_definition
+		from itemsonshelf i
+			join batches b on i.batch = b.id
+			join items it on it.sku = b.sku
+			left join discounts d on i.discount = d.id
+		where it.current = true
+	)
\ No newline at end of file
diff --git a/src/retailtwin/sql/views/stores.sql b/src/retailtwin/sql/views/stores.sql
new file mode 100644
index 0000000..34cd020
--- /dev/null
+++ b/src/retailtwin/sql/views/stores.sql
@@ -0,0 +1,13 @@
+create or replace
+view stores as (
+select
+	l.id as id,
+	l."name" as "name"
+from
+	locations l
+join locationtypes lt
+on
+	l.loctype = lt.id
+where
+	lt."name" = 'store'
+)
\ No newline at end of file
diff --git a/src/retailtwin/sql/views/warehouse_stock.sql b/src/retailtwin/sql/views/warehouse_stock.sql
new file mode 100644
index 0000000..427dd93
--- /dev/null
+++ b/src/retailtwin/sql/views/warehouse_stock.sql
@@ -0,0 +1,16 @@
+create or replace view warehouse_stock as (
+        select it.upc as upc,
+            l.name as warehouse,
+            it.name as name,
+            it.package as package,
+            date(b.received) as received,
+            date(b.best_until) as best_until,
+            i.quantity as quantity
+        from itemsonshelf i
+            join batches b on i.batch = b.id
+            join items it on it.sku = b.sku
+            join locations l on l.id = i."location"
+            join locationtypes l2 on l.loctype = l2.id
+        where l2.name = 'warehouse'
+            and it.current = true
+    )
\ No newline at end of file
diff --git a/src/retailtwin/utils.py b/src/retailtwin/utils.py
new file mode 100644
index 0000000..98ccd0f
--- /dev/null
+++ b/src/retailtwin/utils.py
@@ -0,0 +1,5 @@
+from sqlalchemy.orm import Session
+
+
+def db_uri_from_session(session: Session) -> str:
+    return str(session.get_bind().url.render_as_string(hide_password=False))
diff --git a/src/retailtwin/views.py b/src/retailtwin/views.py
new file mode 100644
index 0000000..0b69dea
--- /dev/null
+++ b/src/retailtwin/views.py
@@ -0,0 +1,36 @@
+"""
+This module contains a set of functions that provide SQLAlchemy table interfaces
+to existing views in the database. Make sure these views have been synced after
+table creation.
+"""
+
+from dengfun.retail.models import Base
+from functools import lru_cache
+from sqlalchemy import Table, Column, Date, Integer, String, JSON
+
+
+# Decorate with a cache to prevent sqlalchemy to create the table definition
+# after multiple function calls. This is not an issue in production because
+# a whole new isntance will be created by the worker generated by gunicorn,
+# but this prevents errors during development. This is a way to create a
+# pythonic singleton.
+@lru_cache
+def get_inventory_view() -> Table:
+    return Table(
+        "inventory",
+        Base.metadata,
+        Column("upc", Integer),
+        Column("batch", Integer),
+        Column("name", String),
+        Column("package", String),
+        Column("received", Date),
+        Column("best_until", Date),
+        Column("quantity", Integer),
+        Column("location", Integer),
+        Column("discount_definition", JSON),
+    )
+
+
+@lru_cache
+def get_stores_view() -> Table:
+    return Table("stores", Base.metadata, Column("id", Integer), Column("name", String))