The J2EE SDK includes several black box resource adapters for performing end-to-end and compatibility testing. The underlying EIS of these adapters is a relational DBMS. The client API is the JDBC 2.0 API and the javax.sql.DataSource interface. Underneath, the black box adapters use JDBC drivers to communicate with relational databases. For more information, see Configuring JDBC Drivers (page 371).
Although the black box adapters use JDBC, resource adapters are not meant to replace JDBC for accessing relational databases. The black box adapters are for testing purposes only. Because they use JDBC, they can be plugged into existing tests that also use JDBC.
The black box resource adapters ...