It is a Java-based media archiver, that is a tool to store information about your media (CDs, floppies, etc.), cataloguing files into a database.
It should be a start for a set of applications using a DBMS for home users.
Oda is the Object Data Archiver. Oda is an extensible Java framework for saving and retrieving object graphs to and from varous storage backends which which presently include XML documents and document hierarchies.