“n:m"的含义和“1:n"在数据库设计中

2021-11-20 00:00:00 database foreign-keys relationship mysql

在数据库设计中n:m 和1:n 是什么意思?

In database design what do n:m and 1:n mean?

它与键或关系有什么关系吗?

Does it have anything to do with keys or relationships?

推荐答案

m:n 用于表示多对多关系(m 对象在另一边与另一边的 n 相关),而 1:n 指的是一对多关系(另一边的 1 对象与 n 相关.

m:n is used to denote a many-to-many relationship (m objects on the other side related to n on the other) while 1:n refers to a one-to-many relationship (1 object on the other side related to n on the other).

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