Maintaining an Audit Table

Question

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?

Answer 1

You have several options:
1. Create audit tables in the database and have them filled with triggers. I believe good-old Headstart utilties (not to be confused with JHeadstart) can automate this proces. No java coding needed
2. Or you want to implement this in business components. I would recommend building a generic solution in the entityImpl superclass in the doDML method. Perhaps it is good idea to have a generic audit table in which changed values are stored in XML format, so you do not need to create shadow tables for every table of your application you want to implement auditing for.