To configure WebSphere Application Server - Express to access databases using the J2EE Connector Architecture (JCA) specification, you must configure a connection factory and install a resource adaptor for your application. Perform these steps:
Configure Java 2 Connector connection factories
If your data access application implements the J2EE Connector Architecture (JCA) specification, you must configure a connection factory to provide connections to your database.
Install Java 2 Connector resource adapters
After you have configured a connection factory, install a resource adapter, which is used to connect to your database.