Home > Database > Mysql Tutorial > mysql-怎么用程序保证表之间的关联,而不是主外键?

mysql-怎么用程序保证表之间的关联,而不是主外键?

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Release: 2016-06-06 09:33:00
Original
1114 people have browsed it

mysql主外键数据数据库链表查询

<code>今天看到这个问题有点疑惑:网上说为了保证数据操作及维护,不建立任何外键,用程序保证关联关系,不建立任何外键关系我明白了,但不知道怎么用程序保证关联关系,,这句话是什么场景,又怎么保证联表查询那???</code>
Copy after login
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template