This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
The industry is moving towards other forms of database, like object and graph.
If you are after a true object DB, check out something like http://www.db4o.com/ but there are quite a few others out there.