Persistence provider for Java that supports final fields

Question

I\'m very new to Java but I\'ve been developing a habit to use final wherever possible declaring immutability which i think is a good thing. (Consider f#)

I\'ve read

Answer 1

Final fields can't be modified after creation by design. Doing otherwise is a very bad idea, because somebody can rely on standard behavior.

In general, persistence frameworks deal with hierarchies of "normal" objects. You have objects, that can be only created and removed, not modified. That's very odd, because when you create an entity, you create some kind of ID for it. Through this ID you connect entity to others. When you remove old entity and create another, you (in general) get an entity with another ID. So, all connections (foreign keys) are broken. Is it target behaviour?