Java Databases and Persistence

• Articles
• Database Management Systems
• JDBC

• Object Persistence
• Tools
• XML

• Computers: Programming: Databases 

• Java Skyline  - Contains a variety of online persistence and object-relational mapping tutorials, and product and tool lists.
• PolePosition  - Benchmark test suite that is used to evaluate object-relational mapping technology and database engines. Offers source codes with brief definitions included.