Object-Relational Mapping with SQLMaps (6 tags)
Hibernate is great--if your DBA will let you run generated database queries on his or her system. Sometimes you need to keep the option of hand-optimized queries open. Sunil Patil introduces SQLMaps, a framework that allows you to do just that.
iBatis DAO (5 tags)
The J2EE Data Access Object pattern calls for encapsulating access to a data source behind an API, giving you the freedom to change implementations or use different persistence strategies for different operations. As Sunil Patil shows, the Apache iBatis DAO framework helps you develop such a strategy.