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Owning side of the relationship

 
Ranch Hand
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Eclipse IDE Ubuntu
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Hi All,

The owner of the relationship is purely our taste or is there any rule for that?

In EJB 3 in Action for it is given as

For bidirectional one-to-many relationships,ManyToOne is always the owning side of the relationship.



Is it an advice or rule to be followed?

May be i am asking this question because i did not understand the entity relationships fully
 
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This is a rule : The many side of one-to-many / many-to-one bidirectional relationships must be the owning side, hence the mappedBy element cannot be specified on the ManyToOne annotation.
 
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Thanks Christophe!
 
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