diff --git a/003_ecommerce/audits/.gitkeep b/003_ecommerce/audits/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/003_ecommerce/audits/assert_positive_order_ids.sql b/003_ecommerce/audits/assert_positive_order_ids.sql
new file mode 100644
index 0000000..99f6ae1
--- /dev/null
+++ b/003_ecommerce/audits/assert_positive_order_ids.sql
@@ -0,0 +1,9 @@
+AUDIT (
+  name assert_positive_order_ids
+);
+
+SELECT
+  *
+FROM @this_model
+WHERE
+  item_id < 0
\ No newline at end of file
diff --git a/003_ecommerce/config.yaml b/003_ecommerce/config.yaml
new file mode 100644
index 0000000..9957cb9
--- /dev/null
+++ b/003_ecommerce/config.yaml
@@ -0,0 +1,11 @@
+gateways:
+  local:
+    connection:
+      type: duckdb
+      database: db.db
+
+default_gateway: local
+
+model_defaults:
+  dialect: duckdb
+  start: 2024-12-15
diff --git a/003_ecommerce/macros/.gitkeep b/003_ecommerce/macros/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/003_ecommerce/macros/__init__.py b/003_ecommerce/macros/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/003_ecommerce/models/.gitkeep b/003_ecommerce/models/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/003_ecommerce/models/bronze/raw_customer_addresses.sql b/003_ecommerce/models/bronze/raw_customer_addresses.sql
new file mode 100644
index 0000000..5904965
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_customer_addresses.sql
@@ -0,0 +1,42 @@
+MODEL (
+  name bronze.raw_customer_addresses,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column updated_at
+  ),
+  grain [address_id],
+  tags ['bronze'],
+  columns (
+    address_id INT,
+    customer_id INT,
+    address_type TEXT,
+    street_address TEXT,
+    city TEXT,
+    state TEXT,
+    postal_code TEXT,
+    country TEXT,
+    is_default BOOLEAN,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_customer_addresses]
+);
+
+SELECT
+  id AS address_id,
+  customer_id,
+  address_type,
+  street_address,
+  city,
+  state,
+  postal_code,
+  country,
+  is_default,
+  created_at,
+  updated_at,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_customer_addresses
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/bronze/raw_customers.sql b/003_ecommerce/models/bronze/raw_customers.sql
new file mode 100644
index 0000000..b8d7513
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_customers.sql
@@ -0,0 +1,34 @@
+MODEL (
+  name bronze.raw_customers,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column updated_at
+  ),
+  grain [customer_id],
+  tags ['bronze'],
+  columns (
+    customer_id INT,
+    email TEXT,
+    first_name TEXT,
+    last_name TEXT,
+    phone_number TEXT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_customers]
+);
+
+SELECT
+  id AS customer_id,
+  email,
+  first_name,
+  last_name,
+  phone_number,
+  created_at,
+  updated_at,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_customers
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/bronze/raw_order_items.sql b/003_ecommerce/models/bronze/raw_order_items.sql
new file mode 100644
index 0000000..1e7b990
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_order_items.sql
@@ -0,0 +1,32 @@
+MODEL (
+  name bronze.raw_order_items,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column order_timestamp
+  ),
+  grain [order_item_id],
+  tags ['bronze'],
+  columns (
+    order_item_id INT,
+    order_id INT,
+    product_id INT,
+    quantity INT,
+    unit_price DECIMAL(10, 2),
+    order_timestamp TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_order_items]
+);
+
+SELECT
+  id AS order_item_id,
+  order_id,
+  product_id,
+  quantity,
+  unit_price,
+  created_at AS order_timestamp,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_order_items
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/bronze/raw_orders.sql b/003_ecommerce/models/bronze/raw_orders.sql
new file mode 100644
index 0000000..a70131d
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_orders.sql
@@ -0,0 +1,30 @@
+MODEL (
+  name bronze.raw_orders,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column order_timestamp
+  ),
+  grain [order_id],
+  tags ['bronze'],
+  columns (
+    order_id INT,
+    user_id INT,
+    total_amount DECIMAL(10, 2),
+    status TEXT,
+    order_timestamp TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_orders]
+);
+
+SELECT
+  id AS order_id,
+  user_id,
+  total_amount,
+  status,
+  created_at AS order_timestamp,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_orders
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/bronze/raw_product_categories.sql b/003_ecommerce/models/bronze/raw_product_categories.sql
new file mode 100644
index 0000000..36f4704
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_product_categories.sql
@@ -0,0 +1,32 @@
+MODEL (
+  name bronze.raw_product_categories,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column updated_at
+  ),
+  grain [category_id],
+  tags ['bronze'],
+  columns (
+    category_id INT,
+    category_name TEXT,
+    parent_category_id INT,
+    description TEXT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_product_categories]
+);
+
+SELECT
+  id AS category_id,
+  name AS category_name,
+  parent_category_id,
+  description,
+  created_at,
+  updated_at,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_product_categories
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/bronze/raw_products.sql b/003_ecommerce/models/bronze/raw_products.sql
new file mode 100644
index 0000000..34d58e2
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_products.sql
@@ -0,0 +1,40 @@
+MODEL (
+  name bronze.raw_products,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column updated_at
+  ),
+  grain [product_id],
+  tags ['bronze'],
+  columns (
+    product_id INT,
+    sku TEXT,
+    product_name TEXT,
+    description TEXT,
+    category_id INT,
+    supplier_id INT,
+    unit_price DECIMAL(10, 2),
+    stock_quantity INT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_products]
+);
+
+SELECT
+  id AS product_id,
+  sku,
+  name AS product_name,
+  description,
+  category_id,
+  supplier_id,
+  unit_price,
+  stock_quantity,
+  created_at,
+  updated_at,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_products
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/bronze/raw_shipments.sql b/003_ecommerce/models/bronze/raw_shipments.sql
new file mode 100644
index 0000000..f91c02c
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_shipments.sql
@@ -0,0 +1,36 @@
+MODEL (
+  name bronze.raw_shipments,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column updated_at
+  ),
+  grain [shipment_id],
+  tags ['bronze'],
+  columns (
+    shipment_id INT,
+    order_id INT,
+    tracking_number TEXT,
+    status TEXT,
+    estimated_delivery_date DATE,
+    actual_delivery_date DATE,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_shipments]
+);
+
+SELECT
+  id AS shipment_id,
+  order_id,
+  tracking_number,
+  status,
+  estimated_delivery_date,
+  actual_delivery_date,
+  created_at,
+  updated_at,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_shipments
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/bronze/raw_suppliers.sql b/003_ecommerce/models/bronze/raw_suppliers.sql
new file mode 100644
index 0000000..de938ca
--- /dev/null
+++ b/003_ecommerce/models/bronze/raw_suppliers.sql
@@ -0,0 +1,44 @@
+MODEL (
+  name bronze.raw_suppliers,
+  kind INCREMENTAL_BY_TIME_RANGE (
+    time_column updated_at
+  ),
+  grain [supplier_id],
+  tags ['bronze'],
+  columns (
+    supplier_id INT,
+    company_name TEXT,
+    contact_name TEXT,
+    contact_email TEXT,
+    contact_phone TEXT,
+    address TEXT,
+    city TEXT,
+    state TEXT,
+    postal_code TEXT,
+    country TEXT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [source_ecommerce.raw_suppliers]
+);
+
+SELECT
+  id AS supplier_id,
+  company_name,
+  contact_name,
+  contact_email,
+  contact_phone,
+  address,
+  city,
+  state,
+  postal_code,
+  country,
+  created_at,
+  updated_at,
+  _loaded_at,
+  _file_name
+FROM source_ecommerce.raw_suppliers
+WHERE
+  _loaded_at >= @start_date AND _loaded_at < @end_date
\ No newline at end of file
diff --git a/003_ecommerce/models/gold/customer_metrics.sql b/003_ecommerce/models/gold/customer_metrics.sql
new file mode 100644
index 0000000..385e39e
--- /dev/null
+++ b/003_ecommerce/models/gold/customer_metrics.sql
@@ -0,0 +1,33 @@
+MODEL (
+  name gold.customer_metrics,
+  kind FULL,
+  grain [customer_id],
+  tags ['gold'],
+  references [silver.customers, silver.orders, bronze.raw_customer_addresses]
+);
+
+SELECT
+  c.customer_id,
+  c.full_name,
+  c.email,
+  COUNT(DISTINCT o.order_id) AS total_orders,
+  SUM(o.total_amount) AS total_spend,
+  AVG(o.total_amount) AS average_order_value,
+  MIN(o.order_timestamp) AS first_order_date,
+  MAX(o.order_timestamp) AS last_order_date,
+  DATE_DIFF('DAY', MIN(o.order_timestamp), MAX(o.order_timestamp)) AS customer_lifetime_days,
+  ca.city,
+  ca.state,
+  ca.country
+FROM silver.customers AS c
+left join bronze.raw_customer_addresses as ca
+  on c.customer_id = ca.customer_id
+LEFT JOIN silver.orders AS o
+  ON c.customer_id = o.user_id
+GROUP BY
+  1,
+  2,
+  3,
+  10,
+  11,
+  12
\ No newline at end of file
diff --git a/003_ecommerce/models/gold/daily_sales_metrics.sql b/003_ecommerce/models/gold/daily_sales_metrics.sql
new file mode 100644
index 0000000..bef9ce9
--- /dev/null
+++ b/003_ecommerce/models/gold/daily_sales_metrics.sql
@@ -0,0 +1,42 @@
+MODEL (
+  name gold.daily_sales_metrics,
+  kind FULL,
+  grain [date],
+  tags ['gold'],
+  references [silver.orders, silver.order_items]
+);
+
+WITH daily_orders AS (
+  SELECT
+    order_timestamp::DATE AS date,
+    COUNT(DISTINCT order_id) AS total_orders,
+    COUNT(DISTINCT user_id) AS unique_customers,
+    SUM(total_amount) AS total_revenue,
+    SUM(CASE WHEN is_completed THEN 1 ELSE 0 END) AS completed_orders
+  FROM silver.orders
+  GROUP BY
+    1
+), daily_items AS (
+  SELECT
+    order_timestamp::DATE AS date,
+    COUNT(DISTINCT product_id) AS unique_products_sold,
+    SUM(quantity) AS total_items_sold,
+    AVG(unit_price) AS avg_unit_price
+  FROM silver.order_items
+  GROUP BY
+    1
+)
+SELECT
+  o.date,
+  o.total_orders,
+  o.unique_customers,
+  o.total_revenue,
+  o.completed_orders,
+  i.unique_products_sold,
+  i.total_items_sold,
+  i.avg_unit_price,
+  o.total_revenue / NULLIF(o.total_orders, 0) AS avg_order_value,
+  o.completed_orders::REAL / NULLIF(o.total_orders, 0) AS order_completion_rate
+FROM daily_orders AS o
+JOIN daily_items AS i
+  ON o.date = i.date
\ No newline at end of file
diff --git a/003_ecommerce/models/gold/product_performance_metrics.sql b/003_ecommerce/models/gold/product_performance_metrics.sql
new file mode 100644
index 0000000..6696a2a
--- /dev/null
+++ b/003_ecommerce/models/gold/product_performance_metrics.sql
@@ -0,0 +1,34 @@
+MODEL (
+  name gold.product_performance_metrics,
+  kind FULL,
+  grain [product_id],
+  tags ['gold'],
+  references [silver.products, silver.order_items, silver.product_categories]
+);
+
+SELECT
+  p.product_id,
+  p.product_name,
+  c.category_name,
+  COUNT(DISTINCT oi.order_id) AS number_of_orders,
+  SUM(oi.quantity) AS units_sold,
+  SUM(oi.total_item_amount) AS total_revenue,
+  AVG(oi.unit_price) AS average_selling_price,
+  p.stock_quantity AS current_stock_level,
+  CASE
+    WHEN p.stock_quantity = 0
+    THEN 'Out of Stock'
+    WHEN p.stock_quantity < 10
+    THEN 'Low Stock'
+    ELSE 'In Stock'
+  END AS inventory_status
+FROM silver.products AS p
+LEFT JOIN silver.order_items AS oi
+  ON p.product_id = oi.product_id
+LEFT JOIN silver.product_categories AS c
+  ON p.category_id = c.category_id
+GROUP BY
+  1,
+  2,
+  3,
+  8
\ No newline at end of file
diff --git a/003_ecommerce/models/gold/supplier_performance_metrics.sql b/003_ecommerce/models/gold/supplier_performance_metrics.sql
new file mode 100644
index 0000000..7cc216e
--- /dev/null
+++ b/003_ecommerce/models/gold/supplier_performance_metrics.sql
@@ -0,0 +1,28 @@
+MODEL (
+  name gold.supplier_performance_metrics,
+  kind FULL,
+  grain [supplier_id],
+  tags ['gold'],
+  references [silver.suppliers, silver.products, silver.order_items]
+);
+
+SELECT
+  s.supplier_id,
+  s.company_name,
+  COUNT(DISTINCT p.product_id) AS number_of_products,
+  SUM(p.stock_quantity) AS total_stock_quantity,
+  COUNT(DISTINCT CASE WHEN p.stock_quantity = 0 THEN p.product_id END) AS out_of_stock_products,
+  COUNT(DISTINCT oi.order_id) AS number_of_orders,
+  SUM(oi.quantity) AS total_units_sold,
+  SUM(oi.total_item_amount) AS total_revenue,
+  s.country AS supplier_country,
+  COUNT(DISTINCT p.category_id) AS number_of_categories_supplied
+FROM silver.suppliers AS s
+LEFT JOIN silver.products AS p
+  ON s.supplier_id = p.supplier_id
+LEFT JOIN silver.order_items AS oi
+  ON p.product_id = oi.product_id
+GROUP BY
+  1,
+  2,
+  9
\ No newline at end of file
diff --git a/003_ecommerce/models/raw_customer_addresses.sql b/003_ecommerce/models/raw_customer_addresses.sql
new file mode 100644
index 0000000..ca240a1
--- /dev/null
+++ b/003_ecommerce/models/raw_customer_addresses.sql
@@ -0,0 +1,21 @@
+MODEL (
+  name source_ecommerce.raw_customer_addresses,
+  kind SEED (
+    path '../seeds/source_customer_addresses.csv'
+  ),
+  columns (
+    id INTEGER,
+    customer_id INTEGER,
+    address_type TEXT,
+    street_address TEXT,
+    city TEXT,
+    state TEXT,
+    postal_code TEXT,
+    country TEXT,
+    is_default BOOLEAN,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/raw_customers.sql b/003_ecommerce/models/raw_customers.sql
new file mode 100644
index 0000000..73548b3
--- /dev/null
+++ b/003_ecommerce/models/raw_customers.sql
@@ -0,0 +1,17 @@
+MODEL (
+  name source_ecommerce.raw_customers,
+  kind SEED (
+    path '../seeds/source_customers.csv'
+  ),
+  columns (
+    id INTEGER,
+    email TEXT,
+    first_name TEXT,
+    last_name TEXT,
+    phone_number TEXT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/raw_order_items.sql b/003_ecommerce/models/raw_order_items.sql
new file mode 100644
index 0000000..3a2a415
--- /dev/null
+++ b/003_ecommerce/models/raw_order_items.sql
@@ -0,0 +1,16 @@
+MODEL (
+  name source_ecommerce.raw_order_items,
+  kind SEED (
+    path '../seeds/source_order_items.csv'
+  ),
+  columns (
+    id INTEGER,
+    order_id INTEGER,
+    product_id INTEGER,
+    quantity INTEGER,
+    unit_price DECIMAL(10,2),
+    created_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/raw_orders.sql b/003_ecommerce/models/raw_orders.sql
new file mode 100644
index 0000000..adadb47
--- /dev/null
+++ b/003_ecommerce/models/raw_orders.sql
@@ -0,0 +1,15 @@
+MODEL (
+  name source_ecommerce.raw_orders,
+  kind SEED (
+    path '../seeds/source_orders.csv'
+  ),
+  columns (
+    id INTEGER,
+    user_id INTEGER,
+    total_amount DECIMAL(10,2),
+    status TEXT,
+    created_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/raw_product_categories.sql b/003_ecommerce/models/raw_product_categories.sql
new file mode 100644
index 0000000..c8eaddb
--- /dev/null
+++ b/003_ecommerce/models/raw_product_categories.sql
@@ -0,0 +1,16 @@
+MODEL (
+  name source_ecommerce.raw_product_categories,
+  kind SEED (
+    path '../seeds/source_product_categories.csv'
+  ),
+  columns (
+    id INTEGER,
+    name TEXT,
+    parent_category_id INTEGER,
+    description TEXT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/raw_products.sql b/003_ecommerce/models/raw_products.sql
new file mode 100644
index 0000000..78adaba
--- /dev/null
+++ b/003_ecommerce/models/raw_products.sql
@@ -0,0 +1,20 @@
+MODEL (
+  name source_ecommerce.raw_products,
+  kind SEED (
+    path '../seeds/source_products.csv'
+  ),
+  columns (
+    id INTEGER,
+    sku TEXT,
+    name TEXT,
+    description TEXT,
+    category_id INTEGER,
+    supplier_id INTEGER,
+    unit_price DECIMAL(10,2),
+    stock_quantity INTEGER,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/raw_shipments.sql b/003_ecommerce/models/raw_shipments.sql
new file mode 100644
index 0000000..bad83d5
--- /dev/null
+++ b/003_ecommerce/models/raw_shipments.sql
@@ -0,0 +1,18 @@
+MODEL (
+  name source_ecommerce.raw_shipments,
+  kind SEED (
+    path '../seeds/source_shipments.csv'
+  ),
+  columns (
+    id INTEGER,
+    order_id INTEGER,
+    tracking_number TEXT,
+    status TEXT,
+    estimated_delivery_date DATE,
+    actual_delivery_date DATE,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/raw_suppliers.sql b/003_ecommerce/models/raw_suppliers.sql
new file mode 100644
index 0000000..a09a405
--- /dev/null
+++ b/003_ecommerce/models/raw_suppliers.sql
@@ -0,0 +1,22 @@
+MODEL (
+  name source_ecommerce.raw_suppliers,
+  kind SEED (
+    path '../seeds/source_suppliers.csv'
+  ),
+  columns (
+    id INTEGER,
+    company_name TEXT,
+    contact_name TEXT,
+    contact_email TEXT,
+    contact_phone TEXT,
+    address TEXT,
+    city TEXT,
+    state TEXT,
+    postal_code TEXT,
+    country TEXT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  )
+);
diff --git a/003_ecommerce/models/silver/customers.sql b/003_ecommerce/models/silver/customers.sql
new file mode 100644
index 0000000..69425bc
--- /dev/null
+++ b/003_ecommerce/models/silver/customers.sql
@@ -0,0 +1,33 @@
+MODEL (
+  name silver.customers,
+  kind INCREMENTAL_BY_UNIQUE_KEY (
+    unique_key [customer_id]
+  ),
+  tags ['silver'],
+  columns (
+    customer_id INT,
+    email TEXT,
+    first_name TEXT,
+    last_name TEXT,
+    full_name TEXT,
+    phone_number TEXT,
+    created_at TIMESTAMP,
+    updated_at TIMESTAMP,
+    _loaded_at TIMESTAMP,
+    _file_name TEXT
+  ),
+  references [bronze.raw_customers]
+);
+
+SELECT
+  customer_id,
+  email,
+  first_name,
+  last_name,
+  first_name || ' ' || last_name AS full_name,
+  phone_number,
+  created_at,
+  updated_at,
+  _loaded_at,
+  _file_name
+FROM bronze.raw_customers
\ No newline at end of file
diff --git a/003_ecommerce/models/silver/order_items.sql b/003_ecommerce/models/silver/order_items.sql
new file mode 100644
index 0000000..78091b2
--- /dev/null
+++ b/003_ecommerce/models/silver/order_items.sql
@@ -0,0 +1,28 @@
+MODEL (
+  name silver.order_items,
+  kind INCREMENTAL_BY_UNIQUE_KEY (
+    unique_key [order_item_id]
+  ),
+  tags ['silver'],
+  references [bronze.raw_order_items]
+);
+
+WITH latest_order_items AS (
+  SELECT
+    *
+  FROM bronze.raw_order_items
+  WHERE
+    _loaded_at >= @start_date AND _loaded_at < @end_date
+  QUALIFY
+    ROW_NUMBER() OVER (PARTITION BY order_item_id ORDER BY _loaded_at DESC) = 1
+)
+SELECT
+  order_item_id,
+  order_id,
+  product_id,
+  quantity,
+  unit_price,
+  quantity * unit_price AS total_item_amount,
+  order_timestamp,
+  _loaded_at
+FROM latest_order_items
\ No newline at end of file
diff --git a/003_ecommerce/models/silver/orders.sql b/003_ecommerce/models/silver/orders.sql
new file mode 100644
index 0000000..23f697b
--- /dev/null
+++ b/003_ecommerce/models/silver/orders.sql
@@ -0,0 +1,27 @@
+MODEL (
+  name silver.orders,
+  kind INCREMENTAL_BY_UNIQUE_KEY (
+    unique_key [order_id]
+  ),
+  tags ['silver'],
+  references [bronze.raw_orders]
+);
+
+WITH latest_orders AS (
+  SELECT
+    *
+  FROM bronze.raw_orders
+  WHERE
+    _loaded_at >= @start_date AND _loaded_at < @end_date
+  QUALIFY
+    ROW_NUMBER() OVER (PARTITION BY order_id ORDER BY _loaded_at DESC) = 1
+)
+SELECT
+  order_id,
+  user_id,
+  total_amount,
+  status,
+  order_timestamp,
+  CASE WHEN status = 'completed' THEN TRUE ELSE FALSE END AS is_completed,
+  _loaded_at
+FROM latest_orders
\ No newline at end of file
diff --git a/003_ecommerce/models/silver/product_categories.sql b/003_ecommerce/models/silver/product_categories.sql
new file mode 100644
index 0000000..2b96872
--- /dev/null
+++ b/003_ecommerce/models/silver/product_categories.sql
@@ -0,0 +1,27 @@
+MODEL (
+  name silver.product_categories,
+  kind INCREMENTAL_BY_UNIQUE_KEY (
+    unique_key [category_id]
+  ),
+  tags ['silver'],
+  references [bronze.raw_product_categories]
+);
+
+WITH latest_categories AS (
+  SELECT
+    *
+  FROM bronze.raw_product_categories
+  WHERE
+    _loaded_at >= @start_date AND _loaded_at < @end_date
+  QUALIFY
+    ROW_NUMBER() OVER (PARTITION BY category_id ORDER BY _loaded_at DESC) = 1
+)
+SELECT
+  category_id,
+  category_name,
+  description,
+  parent_category_id,
+  created_at,
+  updated_at,
+  _loaded_at
+FROM latest_categories
\ No newline at end of file
diff --git a/003_ecommerce/models/silver/products.sql b/003_ecommerce/models/silver/products.sql
new file mode 100644
index 0000000..a5e5e4b
--- /dev/null
+++ b/003_ecommerce/models/silver/products.sql
@@ -0,0 +1,32 @@
+MODEL (
+  name silver.products,
+  kind INCREMENTAL_BY_UNIQUE_KEY (
+    unique_key [product_id]
+  ),
+  tags ['silver'],
+  references [bronze.raw_products]
+);
+
+WITH latest_products AS (
+  SELECT
+    *
+  FROM bronze.raw_products
+  WHERE
+    _loaded_at >= @start_date AND _loaded_at < @end_date
+  QUALIFY
+    ROW_NUMBER() OVER (PARTITION BY product_id ORDER BY _loaded_at DESC) = 1
+)
+SELECT
+  product_id,
+  sku,
+  product_name,
+  description,
+  category_id,
+  supplier_id,
+  unit_price,
+  stock_quantity,
+  CASE WHEN stock_quantity > 0 THEN TRUE ELSE FALSE END AS is_in_stock,
+  created_at,
+  updated_at,
+  _loaded_at
+FROM latest_products
\ No newline at end of file
diff --git a/003_ecommerce/models/silver/shipments.sql b/003_ecommerce/models/silver/shipments.sql
new file mode 100644
index 0000000..86de90e
--- /dev/null
+++ b/003_ecommerce/models/silver/shipments.sql
@@ -0,0 +1,37 @@
+MODEL (
+  name silver.shipments,
+  kind INCREMENTAL_BY_UNIQUE_KEY (
+    unique_key [shipment_id]
+  ),
+  tags ['silver'],
+  grain [shipment_id],
+  references [bronze.raw_shipments]
+);
+
+WITH latest_shipments AS (
+  SELECT
+    *
+  FROM bronze.raw_shipments
+  WHERE
+    _loaded_at >= @start_date AND _loaded_at < @end_date
+  QUALIFY
+    ROW_NUMBER() OVER (PARTITION BY shipment_id ORDER BY _loaded_at DESC) = 1
+)
+SELECT
+  shipment_id,
+  order_id,
+  tracking_number,
+  status,
+  estimated_delivery_date,
+  actual_delivery_date,
+  DATE_DIFF('DAY', created_at, COALESCE(actual_delivery_date, CURRENT_TIMESTAMP)) AS delivery_days,
+  CASE
+    WHEN NOT actual_delivery_date IS NULL
+    AND actual_delivery_date <= estimated_delivery_date
+    THEN TRUE
+    ELSE FALSE
+  END AS is_on_time,
+  created_at,
+  updated_at,
+  _loaded_at
+FROM latest_shipments
\ No newline at end of file
diff --git a/003_ecommerce/models/silver/suppliers.sql b/003_ecommerce/models/silver/suppliers.sql
new file mode 100644
index 0000000..ce9af11
--- /dev/null
+++ b/003_ecommerce/models/silver/suppliers.sql
@@ -0,0 +1,33 @@
+MODEL (
+  name silver.suppliers,
+  kind INCREMENTAL_BY_UNIQUE_KEY (
+    unique_key [supplier_id]
+  ),
+  tags ['silver'],
+  references [bronze.raw_suppliers]
+);
+
+WITH latest_suppliers AS (
+  SELECT
+    *
+  FROM bronze.raw_suppliers
+  WHERE
+    _loaded_at >= @start_date AND _loaded_at < @end_date
+  QUALIFY
+    ROW_NUMBER() OVER (PARTITION BY supplier_id ORDER BY _loaded_at DESC) = 1
+)
+SELECT
+  supplier_id,
+  company_name,
+  contact_name,
+  contact_email,
+  contact_phone,
+  address,
+  city,
+  state,
+  postal_code,
+  country,
+  created_at,
+  updated_at,
+  _loaded_at
+FROM latest_suppliers
\ No newline at end of file
diff --git a/003_ecommerce/seeds/.gitkeep b/003_ecommerce/seeds/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/003_ecommerce/seeds/seed_data.csv b/003_ecommerce/seeds/seed_data.csv
new file mode 100644
index 0000000..ef6d930
--- /dev/null
+++ b/003_ecommerce/seeds/seed_data.csv
@@ -0,0 +1,8 @@
+id,item_id,ds
+1,2,2020-01-01
+2,1,2020-01-01
+3,3,2020-01-03
+4,1,2020-01-04
+5,1,2020-01-05
+6,1,2020-01-06
+7,1,2020-01-07
diff --git a/003_ecommerce/seeds/source_customer_addresses.csv b/003_ecommerce/seeds/source_customer_addresses.csv
new file mode 100644
index 0000000..88edabe
--- /dev/null
+++ b/003_ecommerce/seeds/source_customer_addresses.csv
@@ -0,0 +1,6 @@
+id,customer_id,address_type,street_address,city,state,postal_code,country,is_default,created_at,updated_at,_loaded_at,_file_name
+1,1,home,123 Main St,San Francisco,CA,94105,USA,true,2024-01-01 10:00:00,2024-01-01 10:00:00,2024-01-01 10:30:00,addresses_batch_1.csv
+2,1,work,456 Market St,San Francisco,CA,94105,USA,false,2024-01-01 10:00:00,2024-01-01 10:00:00,2024-01-01 10:30:00,addresses_batch_1.csv
+3,2,home,789 Oak Ave,San Jose,CA,95110,USA,true,2024-01-02 11:00:00,2024-01-02 11:00:00,2024-01-02 11:30:00,addresses_batch_2.csv
+4,3,home,321 Pine St,Oakland,CA,94601,USA,true,2024-01-02 12:00:00,2024-01-02 12:00:00,2024-01-02 12:30:00,addresses_batch_2.csv
+5,4,home,654 Elm St,Berkeley,CA,94701,USA,true,2024-01-03 09:00:00,2024-01-03 09:00:00,2024-01-03 09:30:00,addresses_batch_3.csv
diff --git a/003_ecommerce/seeds/source_customers.csv b/003_ecommerce/seeds/source_customers.csv
new file mode 100644
index 0000000..cc91a66
--- /dev/null
+++ b/003_ecommerce/seeds/source_customers.csv
@@ -0,0 +1,6 @@
+id,email,first_name,last_name,phone_number,created_at,updated_at,_loaded_at,_file_name
+1,john.doe@email.com,John,Doe,+1-555-0101,2024-01-01 10:00:00,2024-01-01 10:00:00,2024-01-01 10:30:00,customers_batch_1.csv
+2,jane.smith@email.com,Jane,Smith,+1-555-0102,2024-01-01 11:00:00,2024-01-01 11:00:00,2024-01-01 11:30:00,customers_batch_1.csv
+3,bob.wilson@email.com,Bob,Wilson,+1-555-0103,2024-01-02 09:00:00,2024-01-02 09:00:00,2024-01-02 09:30:00,customers_batch_2.csv
+4,alice.brown@email.com,Alice,Brown,+1-555-0104,2024-01-02 10:00:00,2024-01-02 10:00:00,2024-01-02 10:30:00,customers_batch_2.csv
+5,charlie.davis@email.com,Charlie,Davis,+1-555-0105,2024-01-03 09:00:00,2024-01-03 09:00:00,2024-01-03 09:30:00,customers_batch_3.csv
diff --git a/003_ecommerce/seeds/source_order_items.csv b/003_ecommerce/seeds/source_order_items.csv
new file mode 100644
index 0000000..cc56900
--- /dev/null
+++ b/003_ecommerce/seeds/source_order_items.csv
@@ -0,0 +1,7 @@
+id,order_id,product_id,quantity,unit_price,created_at,_loaded_at,_file_name
+1,1,1,2,49.99,2024-01-01 12:00:00,2024-01-01 12:30:00,order_items_batch_1.csv
+2,2,2,1,149.99,2024-01-02 13:00:00,2024-01-02 13:30:00,order_items_batch_2.csv
+3,3,1,2,49.99,2024-01-02 14:00:00,2024-01-02 14:30:00,order_items_batch_2.csv
+4,3,3,1,99.99,2024-01-02 14:00:00,2024-01-02 14:30:00,order_items_batch_2.csv
+5,4,4,1,75.50,2024-01-03 10:00:00,2024-01-03 10:30:00,order_items_batch_3.csv
+6,5,2,2,149.99,2024-01-03 11:00:00,2024-01-03 11:30:00,order_items_batch_3.csv
diff --git a/003_ecommerce/seeds/source_orders.csv b/003_ecommerce/seeds/source_orders.csv
new file mode 100644
index 0000000..1316daa
--- /dev/null
+++ b/003_ecommerce/seeds/source_orders.csv
@@ -0,0 +1,6 @@
+id,user_id,total_amount,status,created_at,_loaded_at,_file_name
+1,1,99.99,completed,2024-01-01 12:00:00,2024-01-01 12:30:00,orders_batch_1.csv
+2,1,149.99,completed,2024-01-02 13:00:00,2024-01-02 13:30:00,orders_batch_2.csv
+3,2,199.99,completed,2024-01-02 14:00:00,2024-01-02 14:30:00,orders_batch_2.csv
+4,3,75.50,processing,2024-01-03 10:00:00,2024-01-03 10:30:00,orders_batch_3.csv
+5,4,299.99,completed,2024-01-03 11:00:00,2024-01-03 11:30:00,orders_batch_3.csv
diff --git a/003_ecommerce/seeds/source_product_categories.csv b/003_ecommerce/seeds/source_product_categories.csv
new file mode 100644
index 0000000..434c47b
--- /dev/null
+++ b/003_ecommerce/seeds/source_product_categories.csv
@@ -0,0 +1,6 @@
+id,name,parent_category_id,description,created_at,updated_at,_loaded_at,_file_name
+1,Apparel,null,Clothing and accessories,2024-01-01 09:00:00,2024-01-01 09:00:00,2024-01-01 09:30:00,categories_batch_1.csv
+2,Footwear,null,Shoes and related items,2024-01-01 09:00:00,2024-01-01 09:00:00,2024-01-01 09:30:00,categories_batch_1.csv
+3,Exercise Equipment,null,Fitness and workout gear,2024-01-02 09:00:00,2024-01-02 09:00:00,2024-01-02 09:30:00,categories_batch_2.csv
+4,T-Shirts,1,All types of t-shirts,2024-01-02 09:00:00,2024-01-02 09:00:00,2024-01-02 09:30:00,categories_batch_2.csv
+5,Hoodies,1,Sweatshirts and hoodies,2024-01-03 09:00:00,2024-01-03 09:00:00,2024-01-03 09:30:00,categories_batch_3.csv
diff --git a/003_ecommerce/seeds/source_products.csv b/003_ecommerce/seeds/source_products.csv
new file mode 100644
index 0000000..2f59707
--- /dev/null
+++ b/003_ecommerce/seeds/source_products.csv
@@ -0,0 +1,6 @@
+id,sku,name,description,category_id,supplier_id,unit_price,stock_quantity,created_at,updated_at,_loaded_at,_file_name
+1,SKU001,Basic T-Shirt,Comfortable cotton t-shirt,1,1,49.99,100,2024-01-01 09:00:00,2024-01-01 09:00:00,2024-01-01 09:30:00,products_batch_1.csv
+2,SKU002,Premium Hoodie,Warm and stylish hoodie,1,1,149.99,50,2024-01-01 09:00:00,2024-01-01 09:00:00,2024-01-01 09:30:00,products_batch_1.csv
+3,SKU003,Running Shoes,Lightweight running shoes,2,2,99.99,75,2024-01-02 09:00:00,2024-01-02 09:00:00,2024-01-02 09:30:00,products_batch_2.csv
+4,SKU004,Yoga Mat,Non-slip exercise mat,3,2,75.50,200,2024-01-02 09:00:00,2024-01-02 09:00:00,2024-01-02 09:30:00,products_batch_2.csv
+5,SKU005,Dumbbell Set,10lb weight set,3,3,129.99,30,2024-01-03 09:00:00,2024-01-03 09:00:00,2024-01-03 09:30:00,products_batch_3.csv
diff --git a/003_ecommerce/seeds/source_shipments.csv b/003_ecommerce/seeds/source_shipments.csv
new file mode 100644
index 0000000..1ba21fc
--- /dev/null
+++ b/003_ecommerce/seeds/source_shipments.csv
@@ -0,0 +1,6 @@
+id,order_id,carrier_id,tracking_number,status,shipping_address_id,estimated_delivery_date,actual_delivery_date,created_at,updated_at,_loaded_at,_file_name
+1,1,1,TRACK001,delivered,1,2024-01-03,2024-01-03,2024-01-01 12:30:00,2024-01-03 14:00:00,2024-01-03 14:30:00,shipments_batch_1.csv
+2,2,1,TRACK002,in_transit,1,2024-01-04,null,2024-01-02 13:30:00,2024-01-02 13:30:00,2024-01-02 14:00:00,shipments_batch_2.csv
+3,3,2,TRACK003,delivered,3,2024-01-04,2024-01-04,2024-01-02 14:30:00,2024-01-04 15:00:00,2024-01-04 15:30:00,shipments_batch_2.csv
+4,4,2,TRACK004,processing,4,2024-01-05,null,2024-01-03 10:30:00,2024-01-03 10:30:00,2024-01-03 11:00:00,shipments_batch_3.csv
+5,5,1,TRACK005,in_transit,5,2024-01-05,null,2024-01-03 11:30:00,2024-01-03 11:30:00,2024-01-03 12:00:00,shipments_batch_3.csv
diff --git a/003_ecommerce/seeds/source_suppliers.csv b/003_ecommerce/seeds/source_suppliers.csv
new file mode 100644
index 0000000..b6abf27
--- /dev/null
+++ b/003_ecommerce/seeds/source_suppliers.csv
@@ -0,0 +1,4 @@
+id,company_name,contact_name,contact_email,contact_phone,address,city,state,postal_code,country,created_at,updated_at,_loaded_at,_file_name
+1,Fashion Corp,John Manager,john@fashioncorp.com,+1-555-1001,100 Fashion Ave,New York,NY,10001,USA,2024-01-01 09:00:00,2024-01-01 09:00:00,2024-01-01 09:30:00,suppliers_batch_1.csv
+2,Sports Gear Inc,Sarah Director,sarah@sportsgear.com,+1-555-1002,200 Athletic Dr,Los Angeles,CA,90001,USA,2024-01-02 09:00:00,2024-01-02 09:00:00,2024-01-02 09:30:00,suppliers_batch_2.csv
+3,Fitness Equipment Co,Mike Supplier,mike@fitequip.com,+1-555-1003,300 Fitness Blvd,Chicago,IL,60601,USA,2024-01-03 09:00:00,2024-01-03 09:00:00,2024-01-03 09:30:00,suppliers_batch_3.csv
diff --git a/003_ecommerce/test_output.json b/003_ecommerce/test_output.json
new file mode 100644
index 0000000..7b0678b
--- /dev/null
+++ b/003_ecommerce/test_output.json
@@ -0,0 +1,258 @@
+[
+  {
+    "model": "gold.customer_metrics",
+    "joins": [
+      {
+        "type": "left",
+        "left": "silver.customers",
+        "right": "bronze.raw_customer_addresses",
+        "condition": "c.customer_id = ca.customer_id"
+      },
+      {
+        "type": "LEFT",
+        "left": "bronze.raw_customer_addresses",
+        "right": "silver.orders",
+        "condition": "c.customer_id = o.user_id"
+      }
+    ],
+    "fields": [
+      {
+        "name": "total_orders",
+        "type": "DECIMAL",
+        "sql": "COUNT(DISTINCT o.order_id)",
+        "is_agg": true
+      },
+      {
+        "name": "total_spend",
+        "type": "DECIMAL",
+        "sql": "SUM(o.total_amount)",
+        "is_agg": true
+      },
+      {
+        "name": "average_order_value",
+        "type": "DECIMAL",
+        "sql": "AVG(o.total_amount)",
+        "is_agg": true
+      },
+      {
+        "name": "first_order_date",
+        "type": "DECIMAL",
+        "sql": "MIN(o.order_timestamp)",
+        "is_agg": false
+      },
+      {
+        "name": "last_order_date",
+        "type": "DECIMAL",
+        "sql": "MAX(o.order_timestamp)",
+        "is_agg": false
+      },
+      {
+        "name": "customer_lifetime_days",
+        "type": "DECIMAL",
+        "sql": "DATEDIFF(MAX(o.order_timestamp), MIN(o.order_timestamp), DAY)",
+        "is_agg": false
+      }
+    ]
+  },
+  {
+    "model": "gold.product_performance_metrics",
+    "joins": [
+      {
+        "type": "LEFT",
+        "left": "silver.products",
+        "right": "silver.order_items",
+        "condition": "p.product_id = oi.product_id"
+      },
+      {
+        "type": "LEFT",
+        "left": "silver.order_items",
+        "right": "silver.product_categories",
+        "condition": "p.category_id = c.category_id"
+      }
+    ],
+    "fields": [
+      {
+        "name": "number_of_orders",
+        "type": "DECIMAL",
+        "sql": "COUNT(DISTINCT oi.order_id)",
+        "is_agg": true
+      },
+      {
+        "name": "units_sold",
+        "type": "DECIMAL",
+        "sql": "SUM(oi.quantity)",
+        "is_agg": true
+      },
+      {
+        "name": "total_revenue",
+        "type": "DECIMAL",
+        "sql": "SUM(oi.total_item_amount)",
+        "is_agg": true
+      },
+      {
+        "name": "average_selling_price",
+        "type": "DECIMAL",
+        "sql": "AVG(oi.unit_price)",
+        "is_agg": true
+      },
+      {
+        "name": "current_stock_level",
+        "type": "DECIMAL",
+        "sql": "p.stock_quantity",
+        "is_agg": false
+      },
+      {
+        "name": "inventory_status",
+        "type": "DECIMAL",
+        "sql": "CASE\n  WHEN p.stock_quantity = 0\n  THEN 'Out of Stock'\n  WHEN p.stock_quantity < 10\n  THEN 'Low Stock'\n  ELSE 'In Stock'\nEND",
+        "is_agg": false
+      }
+    ]
+  },
+  {
+    "model": "gold.supplier_performance_metrics",
+    "joins": [
+      {
+        "type": "LEFT",
+        "left": "silver.suppliers",
+        "right": "silver.products",
+        "condition": "s.supplier_id = p.supplier_id"
+      },
+      {
+        "type": "LEFT",
+        "left": "silver.products",
+        "right": "silver.order_items",
+        "condition": "p.product_id = oi.product_id"
+      }
+    ],
+    "fields": [
+      {
+        "name": "number_of_products",
+        "type": "DECIMAL",
+        "sql": "COUNT(DISTINCT p.product_id)",
+        "is_agg": true
+      },
+      {
+        "name": "total_stock_quantity",
+        "type": "DECIMAL",
+        "sql": "SUM(p.stock_quantity)",
+        "is_agg": true
+      },
+      {
+        "name": "out_of_stock_products",
+        "type": "DECIMAL",
+        "sql": "COUNT(DISTINCT CASE WHEN p.stock_quantity = 0 THEN p.product_id END)",
+        "is_agg": true
+      },
+      {
+        "name": "number_of_orders",
+        "type": "DECIMAL",
+        "sql": "COUNT(DISTINCT oi.order_id)",
+        "is_agg": true
+      },
+      {
+        "name": "total_units_sold",
+        "type": "DECIMAL",
+        "sql": "SUM(oi.quantity)",
+        "is_agg": true
+      },
+      {
+        "name": "total_revenue",
+        "type": "DECIMAL",
+        "sql": "SUM(oi.total_item_amount)",
+        "is_agg": true
+      },
+      {
+        "name": "supplier_country",
+        "type": "DECIMAL",
+        "sql": "s.country",
+        "is_agg": false
+      },
+      {
+        "name": "number_of_categories_supplied",
+        "type": "DECIMAL",
+        "sql": "COUNT(DISTINCT p.category_id)",
+        "is_agg": true
+      }
+    ]
+  },
+  {
+    "model": "gold.daily_sales_metrics",
+    "joins": [
+      {
+        "type": "INNER",
+        "left": "silver.orders",
+        "right": "silver.order_items",
+        "condition": "o.date = i.date"
+      }
+    ],
+    "fields": [
+      {
+        "name": "silver.orders.date",
+        "type": "DATE",
+        "sql": "CAST(order_timestamp AS DATE)",
+        "is_agg": false
+      },
+      {
+        "name": "silver.orders.total_orders",
+        "type": "BIGINT",
+        "sql": "COUNT(DISTINCT order_id)",
+        "is_agg": true
+      },
+      {
+        "name": "silver.orders.unique_customers",
+        "type": "BIGINT",
+        "sql": "COUNT(DISTINCT user_id)",
+        "is_agg": true
+      },
+      {
+        "name": "silver.orders.total_revenue",
+        "type": "DECIMAL",
+        "sql": "SUM(total_amount)",
+        "is_agg": true
+      },
+      {
+        "name": "silver.orders.completed_orders",
+        "type": "DECIMAL",
+        "sql": "SUM(CASE WHEN is_completed THEN 1 ELSE 0 END)",
+        "is_agg": true
+      },
+      {
+        "name": "silver.order_items.date",
+        "type": "DATE",
+        "sql": "CAST(order_timestamp AS DATE)",
+        "is_agg": false
+      },
+      {
+        "name": "silver.order_items.unique_products_sold",
+        "type": "BIGINT",
+        "sql": "COUNT(DISTINCT product_id)",
+        "is_agg": true
+      },
+      {
+        "name": "silver.order_items.total_items_sold",
+        "type": "DECIMAL",
+        "sql": "SUM(quantity)",
+        "is_agg": true
+      },
+      {
+        "name": "silver.order_items.avg_unit_price",
+        "type": "DOUBLE",
+        "sql": "AVG(unit_price)",
+        "is_agg": true
+      },
+      {
+        "name": "avg_order_value",
+        "type": "DOUBLE",
+        "sql": "o.total_revenue / NULLIF(NULLIF(o.total_orders, 0), 0)",
+        "is_agg": false
+      },
+      {
+        "name": "order_completion_rate",
+        "type": "DOUBLE",
+        "sql": "CAST(o.completed_orders AS FLOAT) / NULLIF(NULLIF(o.total_orders, 0), 0)",
+        "is_agg": false
+      }
+    ]
+  }
+]
\ No newline at end of file
diff --git a/003_ecommerce/test_output.yaml b/003_ecommerce/test_output.yaml
new file mode 100644
index 0000000..9573cf2
--- /dev/null
+++ b/003_ecommerce/test_output.yaml
@@ -0,0 +1,330 @@
+```yaml
+cubes:
+  - name: silver_customers
+    sql: SELECT * FROM db.silver.customers
+    dimensions:
+      - name: customer_id
+        sql: customer_id
+        type: number
+        primary_key: true
+      - name: full_name
+        sql: full_name
+        type: string
+      - name: email
+        sql: email
+        type: string
+    joins:
+      - name: bronze_raw_customer_addresses
+        relationship: one_to_many
+        sql: "{CUBE.customer_id} = {bronze_raw_customer_addresses.customer_id}"
+      - name: silver_orders
+        relationship: one_to_many
+        sql: "{CUBE.customer_id} = {silver_orders.user_id}"
+
+  - name: bronze_raw_customer_addresses
+    sql: SELECT * FROM db.bronze.raw_customer_addresses
+    dimensions:
+      - name: customer_id
+        sql: customer_id
+        type: number
+      - name: city
+        sql: city
+        type: string
+      - name: state
+        sql: state
+        type: string
+      - name: country
+        sql: country
+        type: string
+
+  - name: silver_orders
+    sql: SELECT * FROM db.silver.orders
+    dimensions:
+      - name: order_id
+        sql: order_id
+        type: number
+        primary_key: true
+      - name: user_id
+        sql: user_id
+        type: number
+      - name: order_timestamp
+        sql: order_timestamp
+        type: time
+      - name: date
+        sql: CAST({order_timestamp} AS DATE)
+        type: time
+      - name: is_completed
+        sql: is_completed
+        type: boolean
+      - name: total_amount
+        sql: total_amount
+        type: number
+    measures:
+      - name: total_orders
+        sql: order_id
+        type: count_distinct
+      - name: unique_customers
+        sql: user_id
+        type: count_distinct
+      - name: total_revenue
+        sql: total_amount
+        type: sum
+      - name: total_spend
+        sql: total_amount
+        type: sum
+      - name: average_order_value
+        sql: total_amount
+        type: avg
+      - name: first_order_date
+        sql: order_timestamp
+        type: min
+      - name: last_order_date
+        sql: order_timestamp
+        type: max
+      - name: customer_lifetime_days
+        sql: "DATEDIFF('day', {first_order_date}, {last_order_date})"
+        type: number
+      - name: completed_orders
+        sql: "CASE WHEN {is_completed} THEN 1 ELSE 0 END"
+        type: sum
+      - name: avg_order_value
+        sql: "{total_revenue} / NULLIF({total_orders}, 0)"
+        type: number
+      - name: order_completion_rate
+        sql: "CAST({completed_orders} AS FLOAT) / NULLIF({total_orders}, 0)"
+        type: number
+    joins:
+      - name: silver_customers
+        relationship: many_to_one
+        sql: "{CUBE.user_id} = {silver_customers.customer_id}"
+      - name: silver_order_items
+        relationship: one_to_many
+        sql: "{CUBE.order_id} = {silver_order_items.order_id}"
+
+  - name: silver_order_items
+    sql: SELECT * FROM db.silver.order_items
+    dimensions:
+      - name: order_item_id
+        sql: order_item_id
+        type: number
+        primary_key: true
+      - name: order_id
+        sql: order_id
+        type: number
+      - name: product_id
+        sql: product_id
+        type: number
+      - name: order_timestamp
+        sql: order_timestamp
+        type: time
+      - name: date
+        sql: CAST({order_timestamp} AS DATE)
+        type: time
+      - name: quantity
+        sql: quantity
+        type: number
+      - name: unit_price
+        sql: unit_price
+        type: number
+      - name: total_item_amount
+        sql: total_item_amount
+        type: number
+    measures:
+      - name: unique_products_sold
+        sql: product_id
+        type: count_distinct
+      - name: total_items_sold
+        sql: quantity
+        type: sum
+      - name: avg_unit_price
+        sql: unit_price
+        type: avg
+      - name: number_of_orders
+        sql: order_id
+        type: count_distinct
+      - name: units_sold
+        sql: quantity
+        type: sum
+      - name: total_revenue
+        sql: total_item_amount
+        type: sum
+      - name: average_selling_price
+        sql: unit_price
+        type: avg
+    joins:
+      - name: silver_orders
+        relationship: many_to_one
+        sql: "{CUBE.order_id} = {silver_orders.order_id}"
+      - name: silver_products
+        relationship: many_to_one
+        sql: "{CUBE.product_id} = {silver_products.product_id}"
+
+  - name: silver_suppliers
+    sql: SELECT * FROM db.silver.suppliers
+    dimensions:
+      - name: supplier_id
+        sql: supplier_id
+        type: number
+        primary_key: true
+      - name: company_name
+        sql: company_name
+        type: string
+      - name: supplier_country
+        sql: country
+        type: string
+    joins:
+      - name: silver_products
+        relationship: one_to_many
+        sql: "{CUBE.supplier_id} = {silver_products.supplier_id}"
+
+  - name: silver_products
+    sql: SELECT * FROM db.silver.products
+    dimensions:
+      - name: product_id
+        sql: product_id
+        type: number
+        primary_key: true
+      - name: supplier_id
+        sql: supplier_id
+        type: number
+      - name: category_id
+        sql: category_id
+        type: number
+      - name: product_name
+        sql: product_name
+        type: string
+      - name: stock_quantity
+        sql: stock_quantity
+        type: number
+      - name: current_stock_level
+        sql: stock_quantity
+        type: number
+      - name: inventory_status
+        sql: "CASE WHEN {stock_quantity} = 0 THEN 'Out of Stock' 
+              WHEN {stock_quantity} < 10 THEN 'Low Stock' ELSE 'In Stock' END"
+        type: string
+    measures:
+      - name: total_stock_quantity
+        sql: stock_quantity
+        type: sum
+      - name: out_of_stock_products
+        sql: product_id
+        type: count_distinct
+        filters:
+          - sql: "{stock_quantity} = 0"
+      - name: number_of_products
+        sql: product_id
+        type: count_distinct
+      - name: number_of_categories_supplied
+        sql: category_id
+        type: count_distinct
+      - name: units_sold
+        sql: "{silver_order_items.quantity}"
+        type: sum
+      - name: total_revenue
+        sql: "{silver_order_items.total_item_amount}"
+        type: sum
+      - name: average_selling_price
+        sql: "{silver_order_items.unit_price}"
+        type: avg
+      - name: number_of_orders
+        sql: "{silver_order_items.order_id}"
+        type: count_distinct
+    joins:
+      - name: silver_suppliers
+        relationship: many_to_one
+        sql: "{CUBE.supplier_id} = {silver_suppliers.supplier_id}"
+      - name: silver_order_items
+        relationship: one_to_many
+        sql: "{CUBE.product_id} = {silver_order_items.product_id}"
+      - name: silver_product_categories
+        relationship: many_to_one
+        sql: "{CUBE.category_id} = {silver_product_categories.category_id}"
+
+  - name: silver_product_categories
+    sql: SELECT * FROM db.silver.product_categories
+    dimensions:
+      - name: category_id
+        sql: category_id
+        type: number
+        primary_key: true
+      - name: category_name
+        sql: category_name
+        type: string
+
+views:
+  - name: customer_metrics
+    cubes:
+      - join_path: silver_customers
+        includes:
+          - customer_id
+          - full_name
+          - email
+      - join_path: silver_customers.bronze_raw_customer_addresses
+        includes:
+          - city
+          - state
+          - country
+      - join_path: silver_customers.silver_orders
+        includes:
+          - total_orders
+          - total_spend
+          - average_order_value
+          - first_order_date
+          - last_order_date
+          - customer_lifetime_days
+
+  - name: daily_sales_metrics
+    cubes:
+      - join_path: silver_orders
+        includes:
+          - date
+          - total_orders
+          - unique_customers
+          - total_revenue
+          - completed_orders
+          - avg_order_value
+          - order_completion_rate
+      - join_path: silver_orders.silver_order_items
+        includes:
+          - unique_products_sold
+          - total_items_sold
+          - avg_unit_price
+
+  - name: supplier_performance_metrics
+    cubes:
+      - join_path: silver_suppliers
+        includes:
+          - supplier_id
+          - company_name
+          - supplier_country
+      - join_path: silver_suppliers.silver_products
+        includes:
+          - number_of_products
+          - total_stock_quantity
+          - out_of_stock_products
+          - number_of_categories_supplied
+      - join_path: silver_suppliers.silver_products.silver_order_items
+        includes:
+          - number_of_orders
+          - units_sold
+          - total_revenue
+
+  - name: product_performance_metrics
+    cubes:
+      - join_path: silver_products
+        includes:
+          - product_id
+          - product_name
+          - current_stock_level
+          - inventory_status
+      - join_path: silver_products.silver_product_categories
+        includes:
+          - category_name
+      - join_path: silver_products.silver_order_items
+        includes:
+          - number_of_orders
+          - units_sold
+          - total_revenue
+          - average_selling_price
+```
\ No newline at end of file
diff --git a/003_ecommerce/tests/.gitkeep b/003_ecommerce/tests/.gitkeep
new file mode 100644
index 0000000..e69de29