Maggy Zhang

You should use java bean to connect to DB. Servlet is just for controll and used to invoke corresonding java bean .

In EntityBean interface , there exists method "unsetEntityContext". Why does not unsetSessionContext() exist in session bean?

Thanks a lot

There two way using trasanction in EJB(Session Bean). One way is that I can handle transaction by UserTransaction through JNDI or by configuring transaction attribute in ejb-jar.xml. When should I use first way ? when should I use the second way?
The second question is:Can I use UserTransaction in javabean by JNDI lookup , suppose that the javabean run inside application server?
Thanks

Hi,
I like to know which store in Toronto I can get the book"Sun Certified Enterprise Architecture for J2EE(TM) Technology Study Guide " ?
Thanks

what is answer?

Where can I get mock exams for Part I?
Thanks

I had J2EE experience.I am looking for a job now. I want to know if SCEA is usefull for getting a job.

In a Html form, I want to have two buttons. Clicking them will go to different servlet.I want this function will be done in browser, in stead of server. How can I do it?