how does Ojb, JDO, EJB3-Entity Bean, JPA, OpenJPA are differ fromeach

[Amit Jain]

Hi All,

Please help me, I want to know how does Ojb, JDO, EJB3-Entity Bean,
JPA, OpenJPA are differ from each other.

Thanks in advance...

Amit Jain

 

[Lew]

Please help me, I want to know how does Ojb, JDO, EJB3-Entity Bean,
JPA, OpenJPA are differ from each other.

AIUI, OJB is an implementation of JDO. EJB3 "entity beans" don't exist; EJB
3.0 uses JPA for entities. JPA is a specification. OpenJPA is one
implementation of JPA.

You yourself provided the link that discusses the difference between JDO and
JPA in another thread.

 

[Amit Jain]

AIUI, OJB is an implementation of JDO.  EJB3 "entity beans" don't exist; EJB
3.0 uses JPA for entities.  JPA is a specification.  OpenJPA is one
implementation of JPA.

You yourself provided the link that discusses the difference between JDO and
JPA in another thread.

Hi Lew,
Can you please through some light on "OJB is an implementation of
JDO."

Thanks in advance,

Amit Jain

 

[Lew]

Can you please through some light on "OJB is an implementation of
JDO."

No, I can't. I know nothing about OJB.