Java EE (Java Enterprise Edition) General Discussion

Hi - I have created a small country table with country cd, country name and some audit columns like updt timestamp, updt cd etc. I edited the doDML() method of cntryImpl.java to auto populate some of the audit information.
and generated the JHeadstart webpages.
If I want to add another table like an audit table, which will maintain all the inserts, deletes, updates made to the actual country table, how do I do that ?
That is, any row added to the country table via the default webpages, should also add a row in this audit table. Any deletes in the actual table, should insert a record in the audit table with updt type cd 'delete'. How do I go about this?