I am confused between these two things.. JDO and JPA. Why two different framework for the same thing ? What level of understanding I need to have on JDO for the exam.
I already have read JPA. Do, I need to study JDO as well ? Or should I just remember the few differences like JPA is only for RDBMS, JDO supports many different databases; JDO more mature than JPA. ( I know only these two :-( )