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The moose likes Architect Certification (SCEA/OCMJEA) and the fly likes CMP and BMP- SCEA -1 Big Moose Saloon
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CMP and BMP- SCEA -1

Giju George
Ranch Hand

Joined: Jun 08, 2004
Posts: 333
When do we use CMP over BMP ???
This is what I read :-
BMP- high performance, complex data types.
CMP- low performance, Standard data types.

Is this correct... I mean for EJB1.1 and EJB2.0 (I know scea-1 is still based on EJB1.1) ???


SCJP 1.4, SCWCD 1.4, SCBCD 1.3, SCEA
Mark Cave
Ranch Hand

Joined: May 22, 2005
Posts: 92
This is true only for EJB1.1 NOT for EJB 2.0 and above.
David Follow
Ranch Hand

Joined: Oct 16, 2001
Posts: 223
It is true for EJB1.1 and certainly (and hopefully) not for EJB2.0


SCJP, SCEA
Viresh Jain
Greenhorn

Joined: Jun 14, 2005
Posts: 3
Can someone please explain why it is not for EJB2.0?
David Follow
Ranch Hand

Joined: Oct 16, 2001
Posts: 223
Because as far as I'm concerned EJB2.x has gained a lot on reliability, performance and so forth. Further EJB2.0 can handle CMR (container managed relations). Relationships couldn't be done (so easily) with EJB1.1.

But we're all looking forward to EJB3.0 which changes the (EJB)-world entirely

D.
[ June 15, 2005: Message edited by: David Follow ]
Siddhartha Bhattacharya
Ranch Hand

Joined: Jul 02, 2002
Posts: 36
Yes thats true..Especially the persistence model..
That means existing SCBCD certificates can be trashed ;-)
 
Consider Paul's rocket mass heater.
 
subject: CMP and BMP- SCEA -1