feat(dbt): Add dbt models

models/schema.yml

@@ -0,0 +1,82 @@
+version: 2
+
+models:
+  - name: customers
+    description: This table has basic information about a customer, as well as some derived facts based on a customer's orders
+
+    columns:
+      - name: customer_id
+        description: This is a unique identifier for a customer
+        tests:
+          - unique
+          - not_null
+
+      - name: first_name
+        description: Customer's first name. PII.
+
+      - name: last_name
+        description: Customer's last name. PII.
+
+      - name: first_order
+        description: Date (UTC) of a customer's first order
+
+      - name: most_recent_order
+        description: Date (UTC) of a customer's most recent order
+
+      - name: number_of_orders
+        description: Count of the number of orders a customer has placed
+
+      - name: total_order_amount
+        description: Total value (AUD) of a customer's orders
+
+  - name: orders
+    description: This table has basic information about orders, as well as some derived facts based on payments
+
+    columns:
+      - name: order_id
+        tests:
+          - unique
+          - not_null
+        description: This is a unique identifier for an order
+
+      - name: customer_id
+        description: Foreign key to the customers table
+        tests:
+          - not_null
+          - relationships:
+              to: ref('customers')
+              field: customer_id
+
+      - name: order_date
+        description: Date (UTC) that the order was placed
+
+      - name: status
+        description: '{{ doc("orders_status") }}'
+        tests:
+          - accepted_values:
+              values: ['placed', 'shipped', 'completed', 'return_pending', 'returned']
+
+      - name: amount
+        description: Total amount (AUD) of the order
+        tests:
+          - not_null
+
+      - name: credit_card_amount
+        description: Amount of the order (AUD) paid for by credit card
+        tests:
+          - not_null
+
+      - name: coupon_amount
+        description: Amount of the order (AUD) paid for by coupon
+        tests:
+          - not_null
+
+      - name: bank_transfer_amount
+        description: Amount of the order (AUD) paid for by bank transfer
+        tests:
+          - not_null
+
+      - name: gift_card_amount
+        description: Amount of the order (AUD) paid for by gift card
+        tests:
+          - not_null