The scenario
This ER diagram models product and inventory data for warehouse management, tracking product categories, warehouse locations, and stock quantities.
What is in this drawing
Read the decisions behind it.
01
Used composite primary key for Inventory to enforce unique product-warehouse pairs
02
Included Category entity to group products
03
Defined direct foreign keys with explicit cardinalities for clarity
Suitable for warehouse management systems, inventory tracking, and product catalog databases.
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