mysql数据库关系表设计原则

https://blog.csdn.net/qq_36432666/article/details/78934073

https://kb.cnblogs.com/page/138526/

http://blog.sina.com.cn/s/blog_a29f7cb50101jr5d.html

https://www.cnblogs.com/mjbrian/p/6841226.html

https://blog.csdn.net/persistencequxi/article/details/78502501

mysql数据库关系表设计原则

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