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ejb interview questions

manish ahuja
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A few Interview questions which i hd to face.

1) What happens when say in a ejb appln(stateful session & entity beans
the no. of requests (active clients)
exceeds max beans set in the deployment descriptor . I read somewhere
that such requests will be queued. Could you ellaborate a bit.

2) Suppose we have a j2ee application using ejb where customers submit
their complaints on the web. Any customer care person who views the
complaint lodged can choose to respond back to the customer.
But once a customer care person decides to respond , any other customer
care person should not be able to respond to that complaint but should
be able to view
How to go about acheiving this in J2ee . Which pattern help in
addressing the above issue.
3) What the difference between entity bean - cmp and o/r mapping tools like
toplink & cocobase
Are they competing technologies or both are designed to solve different problem areas

4) can an entity bean be both CMP as well as BMP .

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