Is it possible to have foreign key enforced without object-to-object mapping?

Question

Assuming the following mappings are provided:

Answer 1

As said

I understand that if I convert but foreign key would not be enforced by the database.

So my advice is: use both

public class EntityA {

    private Integer idOfB;

    private EntityB entityB;

    // getter's and setter's

}

And

Notice when two properties share the same column, you have to put settings about it in just one property. Otherwise, Hibernate will complain some errors. It explains why i define update="false" and insert="false" in entityB property.

regards,