I've a class A which has one to many relationship with class B. Each row in class B need not be unique and hence need not have a primary key, but should have A.id like below

class A {
private Long id;
Set<B> bs;
}

class B {
private Long aId;
private String data;
}

aId is the foreign key from A. Is it possible to have such relationship without having primary key in class B? class A --> Table A and class B---> Table B. Having primary key in class B is not going to help as each entry need not be unique. The only query that we'll run is to find all the entries in B where aId=XXXX.


Could please someone let me know if this is possible in hibernate?

Thanks for any input in advance!

Mapped classes must declare the primary key column of the database table. (6.1.4. id in the reference docs). If you want to use Hibernate, your tables need a primary key.

Thanks a5sk4s for your response.