This illustration shows that the product_information table and the product_descriptions table have a one to many relationship through the product_id column.

The product_information table and the inventories table have a one to many relationship through the product_id column.

The inventories table and the warehouses table have a many to one relationship through the warehouse_id column.

The locations table and the warehouses table have a one to many relationship through the location_id column.

The primary key of the product_information table is the product_id column.

The primary key of the product_descriptions table includes the product_id and language_id columns.

The primary key of the inventories table includes the product_id and warehouse_id columns.

The primary key of the warehouses table is the warehouse_id column.

The primary key of the locations table is the location_id column.