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.
Also, Please UseCodeTags when posting code or configuration. Unformatted code and configuration is unnecessarily difficult to read.
Have you read any of the Hibernate mapping tutorials available on the web? It's almost always quicker to SearchFirst, especially when it's a general question easily answerable through other mechanisms.