JDBF is a JDBC-based Object-Relational mapping system.It needs a xml configurator file called "repository" where objects are mapped.
It generates SQL for retreiving, saving, and deleting objects.
JDBFramework (Java Database Framework) is a number of components intended for working with DBMS Oracle. The main difference - JDBF doesn't allow placing business logic on the application server. All business logic is placed at a database level only.