When an application or WebSphere component requires access to a relational database, that database must be defined to WebSphere as a data source. Two basic definitions are required:
•A Java Database Connectivity (JDBC) provider definition describes a vendor-provided JDBC driver. It includes the type of database access that it provides and the location of the files that provide the implementation.
•A data source definition defines which JDBC provider to use, the name, and location of the database, and other connection properties. ...