产品型号：iPhone11 系统版本：iOS 13 1、一边玩手机一边充电会导致手机发烫，尽量不要充电的时候玩手机。
Is it possible to break the composite key 开发者_JAVA百科of a table and use one of them as a primary key for other table? If yes, then please tell me how can I do it?Generally you use a composite key
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