Database plugins: a quick overview please

[martinda]

What is the state and/or between these plugins supposed to be?
https://wiki.jenkins-ci.org/display/JENKINS/Database+Plugin
https://wiki.jenkins-ci.org/display/JENKINS/PostgreSQL+Database+Plugin
https://wiki.jenkins-ci.org/display/JENKINS/Audit+To+Database+Plugin

I'd like to add postgresql support to the audit to database plugin.
What is the right path to follow, work on the audit to database code, or start anew based on the PostgreSQL database plugin?

Thanks,
Martin