Creating EJB 3.0 Entity Relationships - EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g - page 210

Select the project properties for the EJB3Model project and select the EJB Module
node. The data source name corresponding to the OracleDBConnection is jdbc/
OracleDBConnectionDS .
To create the entity beans from tables select File | New , and in the New Gallery
window, select Business Tier | EJB in Categories and Entities from Tables in the
Items header, as shown in the following screenshot. Click on OK .