if a specification of a product has been added to the shopping cart, and the merchant deletes the specification after a period of time, won t users who have added this specification to the shopping cart make an error when browsing the shopping cart? Wha...
first of all, I found a lot of database design on Baidu, it can be said that there are different opinions! I see an intermediate table is designed like this, commodity ID sku attributes, unit price inventory, see that the intermediate attributes store js...
A rookie, all of you hope to tell ...