Anyone ever used Daffodil Database?

If you have, what is your impression? I tested it a bit under RedHat 9 and must say that it seems solid.

Daffodil db is a database totally written in Java. It complies with SQL 99 key features and provides support for JDBC 3.0 API (J2EE certified JDBC Level 4 driver). Its features also include Triggers, views, sub-queries and batch updates.

http://www.daffodilwoods.com/index.html