ravikantiramu

 Profile Answers by ravikantiramu Questions by ravikantiramu

• Mar 7th, 2006

 

Ejb Context is the container implemented object....

Using this object....We can get the information about the bean,and check the user role and find the transaction status.........

s_s78

 Profile Answers by s_s78 

• Mar 20th, 2006

 

A1. EJB QL is introduced in EJB 2.0 specification it is used to write only finder(Select) queries for Entity beans. it is simple to write and give OO feel. it supports lazy loading.

A2.It is only applicable for statefull session bean

A3. In BMP it is programmer responcibility to manage persistance and write queries for insertion,deletion and updation of records(Entities). wheras in CMP this all is handle by Container itself.

A4. Entity bean represent a row from database table more or less you can think it as OO representation of tabular data. you read from object, update Object. the container map those objects to a row in a table.

A5.class dose not return anything it is method such as findByPrimayKey and Create i can tell you later if you clear the question more clear.

A6. client is client in all respect and technology, client request for services that server can serve.

A7. on both machine.

A8. for JSP it only knows methods exposed by session bean,further if u r using entity bean session will communication to database via entity bean,finally database has physical data. case.1. JSP->Session->Entity->DB. case.2. JSP->Session->DB

rest later..

Shekhar Singh