Hibernate Tip: How to model associations with non primary key columns

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When you’re working with legacy database, you probably had the situation that you had to map a many-to-one association that used a non-primary key column on the to-one side.
You can easily map that with a @JoinColumn annotation. It allows you to reference any column that contains unique values, e.g., a natural id.

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  1. Thorben Janssen
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Комментарии
Автор

Is there any mthod for Connect columns without primary key and without foreing key?

MrSametyuksel
Автор

Is it ok if 'isbn' isn't unique in 'book' table? Thanks

quangnvn