hibernate中many to one 和 one to many 有什么区别

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hibernate中manytoone和onetomany有什么区别hibernate中manytoone和onetomany有什么区别hibernate中manytoone和onetomany有什么

hibernate中many to one 和 one to many 有什么区别
hibernate中many to one 和 one to many 有什么区别

hibernate中many to one 和 one to many 有什么区别
大家不要误导人.
多对一和一对多就是一回事情,哪有那么复杂?!
对于“多”的一方来看,就是多对一;对于“一”的一方来看,就是一对多.
仅仅是同一事物的不同看待角度.
我再多说两句:Hibernate中的所有关系,从本质上来看都是一对多的关系.
一对一是特殊的一对多;
多对多是两个一对多的组合,在实际使用中,通过引入中间表,多对多会被拆分成两个一对多.

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