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Question 
what s the difference b/w EJB 2.0 and EJB 3.0 technically
 Question Submitted By :: Uma
I also faced this Question!!     Rank Answer Posted By  
 
  Re: what s the difference b/w EJB 2.0 and EJB 3.0 technically
Answer
# 1		 
EJB 2.0 are very complex, difficult to learn/use. Uses 
methods 
like "ejbPassivate", "ejbActivate", "ejbLoad", "ejbStore". 
Needs a deployment descriptor. 

In EJB 3.0 methods 
like "ejbPassivate", "ejbActivate", "ejbLoad", "ejbStore" 
are removed. Annotations are provided. In EJB 3.0, we donot 
need deployment descriptor. POJO(Plain old java object) are 
introduced. For defining any relationship 1:1, 1:N, N:1, 
M:N we have annitations.
 
Is This Answer Correct ?    2 Yes 0 No
Nidhi Aggarwal
 

 
 
 
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