An application that is installed on an application server must have bindings defined before you can start the application. The Enterprise JavaBeans (EJB) references and resource references that are defined in the application must be bound to the actual enterprise beans or resources that are defined in the application server.
For more information, see the topic Application bindings.
If you bind an EJB module to a data source, all beans in that module use the same data source for persistence. If you specify the data source at the bean level, then that data source is used instead.
See the assembly tool information center for the steps on how to complete this task.