Trying db4o

Sincerely, I'm tired of making a data layer and to translate all my objects into table registers. It gets more complicated if you have a very relationed database or if you are using arrays, inheritance or complex objects. It's difficult even if you try to develop a generic Object/Relation parser to do the job. So I want to try a ODBMS (Object Oriented DataBase Management System) to avoid such complications and only dedicate to the real functionality of my library.
I found a really good GPL licenced one: DataBase4Objects. It's intended to Java and C# so is perfect for this project.

If you have another suggests, do them please.