情境
An online computer parts retailer needs to track customer orders, product catalog, inventory levels across warehouses, and payments while supporting multiple product types such as CPUs and GPUs.
這張圖裡有什麼
看懂背後的決策。
01
Used an abstract Product class with IProduct interface to support multiple component types.
02
Modeled Order-to-OrderLine as composition with 1..* multiplicity.
03
Linked InventoryItem to Product and Warehouse to track stock per location.
Reusable for any retail system needing order processing, product catalog inheritance, and multi-warehouse inventory tracking.