This week's book giveaway is in the Mac OS forum.
We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line!
See this thread for details.
The moose likes EJB Certification (SCBCD/OCPJBCD) and the fly likes  mock exam question on locking & transactions Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


JavaRanch » Java Forums » Certification » EJB Certification (SCBCD/OCPJBCD)
Bookmark " mock exam question on locking & transactions" Watch " mock exam question on locking & transactions" New topic
Author

mock exam question on locking & transactions

subba rao
Greenhorn

Joined: Apr 24, 2008
Posts: 24
A named query that sets an exclusive pessimistic on the entities returned by the query by setting the
NamedQuery lockMode element to LockModeType.PESSIMISTIC_FORCE_INCREMENT. The
application starts transaction and executes the query. Which of the following statements is correct
about the entities returned by the query?
A. Only the current transition may modify or delete the entity instances.
B. The current transaction may NOT modify or delete the entity instances.
C. Other concurrent transactions may modify or delete the entity instances.
D. Other concurrent transactions may modify but MAY NOT delete the entity instances

what is the answer for this Q?

in my view the answer should be A.

 
GeeCON Prague 2014
 
subject: mock exam question on locking & transactions