接着使用STOCK (DB2)表提取零件的供应商键和当前库存水平。
The stock (DB2) table is used to extract supplier keys and current stock levels for the parts.
前三个使用案例(UC 1：购买商品、UC 2：运送商品和UC 3：补充库存)都与零售商系统有关。
The first three use cases (UC1: Purchase Goods, UC2: Source Goods, and UC3: Replenish Stock) are all related to the Retailer System.
前三个使用案例(UC 1：购买商品、UC 2：运送商品和UC 3：补充库存)都与零售商系统有关。
The first three use cases (UC1: Purchase Goods, UC2: Source Goods, and UC3: Replenish Stock) are all related to the Retailer System.
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