What the best approach to access RDB within struts (no EJB) ?

[Annie Chang]

I'm searching for the best approach to access relational database within
struts.
Could you give me some suggestion? Thanks in adv.
 
I do not want to use EJB. Any free framework, tools, whatever can help
me?
What about DAO and/or JDO? What's DAO? Where can I get a comprehensive
example?
 
Thanks