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 EJB  |  Question 1 of 9    Print  
What is true about Primary Key class in Entity Beans ?

(a) Used to identify the entity bean based on EJB type, Home Interface and Container Context.
(b) Used to identify the entity bean based on EJB type, Remote Interface and Container Context.
(c) The definition of Primary Key class can be deferred till deployment


  
Total Answers and Comments: 2 Last Update: May 12, 2005   
  
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March 24, 2005 00:01:40   #1  
BALAJI        

RE: What is true about Primary Key class in Entity Beans ?(a) Used to identify the entity bean based on ...
please give more information on primarykey class
 
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May 12, 2005 07:33:52   #2  
upender        

RE: What is true about Primary Key class in Entity Beans ?(a) Used to identify the entity bean based on ...
The primary class makes every enity bean different. for example, if you have 1 million different bank account entity beans, each bank account needs to have a unique ID that can never be repeated in any other bank account. A primary key is an object that may contain any number of attributes. This could be whatever data necessary to uniquely identify an entity bean data instance.
 
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 Related Questions

What is true about Primary Key class in Entity Beans ?(a) Used to identify the entity bean based on EJB type, Home Interface and Container Context. (b) Used to identify the entity bean based on EJB type, Remote Interface and Container Context. (c) The definition of Primary Key class can be deferred till deployment

The Home Interface in Entity beans(a) Provides at least one create() method (b) May not provide any create() method (c) Provides at least one findByPrimaryKey() method (d) May not provide any findByPrimaryKey() method

Latest Answer : b ...

Answered by Hari on 2005-05-09 07:50:11: This will be called by the container to synchonize all the values of the entity at any point of time 
Latest Answer : This will be called by the container to synchonize all the values of the entity at any point of time ...

CMP bean provides(a) Empty implementation of ejbLoad() and ejbStore() (b) Concrete implementation of ejbLoad() and ejbStore()
Answered by Hari on 2005-05-09 07:53:40: a 


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