Here are some links to useful documentation on Databases in Java (based on NetBeans IDE with GlassFish Server).
- NetBeans.org documentation, search results: here
- Working with Java DB databases, configuring databases: here (in particular, see section on “Registering the Database in NetBeans IDE” in the Services tab)
- Oracle.com documentation on Developing Applications with NetBeans IDE – section 24: Working and Connecting with Databases