By Ramakrishna on Aug 24, 2008 in Ejb Interview Questions | 0 Comments
Q) What are transaction isolation levels in EJB?
A)
1. Transaction_read_uncommitted- Allows a method to read uncommitted data from a DB(fast but not wise).
2. Transaction_read_committed- Guarantees that the data you are getting has been committed.
3. Transaction_repeatable_read - Guarantees that all reads of the database will be the same during the transaction (good for read and update [...]
By Ramakrishna on Aug 24, 2008 in Ejb Interview Questions | 0 Comments
Q) What are Local Interfaces? Describe.
A) EJB was originally designed around remote invocation using the Java Remote Method Invocation (RMI) mechanism, and later extended to support to standard CORBA transport for these calls using RMI/IIOP. This design allowed for maximum flexibility in developing applications without consideration for the deployment scenario, and was a strong feature [...]
By Ramakrishna on Jul 7, 2008 in Ejb Interview Questions | 0 Comments
EJB INTERVIEW QUESTIONS AND ANSWERS
Q) What are Enterprise Java Beans?
A) Enterprise Java Beans (EJB) is a specification which defines a component architecture for developing distributed systems. Applications written using the Enterprise JavaBeans architecture are resusable,scalable, transactional, and secure. Enterprise Java Bean’s allow the developer to only focus on implementing the business logic of the [...]
