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This is actually a hibernate issue for you. You need to link the two objects together(1toM or MtoM) and then create a query that manipulates that relationship.

All student that have taken a...

If you don't need EJB give tomcat a shot. I use it to run my companies website and do not have issues. I have apache - mod_proxy_jk - tomcat - sql server. No problems at all. And if there are...

I think you are looking for the tilesViewResolver that now ships as part of SpringMVC.

Don't map the form bean directly to the DB.

One bean to represent form data
Two beans to represent table data
Code in the controller/service to move data between the objects.

Check out these links in tomcat:

http://tomcat.apache.org/tomcat-6.0-doc/cluster-howto.html
http://tomcat.apache.org/tomcat-6.0-doc/config/manager.html

I think you are looking for the JDBC...

First you are going to have to pick between one of two options based on what happens when a user picks an item.
1) When the user picks a state, a Javascript event runs that displays the hidden form...