库存数据库的实体关系图解释
This is a Entity relationship diagram of Inventory database.
How we can interpret it? my idea is like there is list of product
with Dealer, customer orders
the product. supplier
supplies it. customer purchases
it. But i think i'm not able to perfectly interpret it. what does the above ER diagram shows.
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该图说,“产品”是从“供应商”和“订购”的“购买”(仅在订单表中命名,没有单独的实体)。
This diagram says that "products" are "purchased" from "suppliers" and "ordered" by customers (which are only named in the orders table and do not have a separate entity).