Hello,
i wrote a very simple Entity Bean with a few cmp fields. I want the bean to store the fields in my postgreSQL database.
I have put the postgres-ds.xml properly into the deploy folder with JNDI name PostgresDS.

in jbosscmp-jdbc.xml i specified:

<jbosscmp-jdbc>
 <defaults>
 <datasource>java:PostgresDS</datasource>
 <datasource-mapping>PostgreSQL 7.2</datasource-mapping>
 <create-table>true</create-table>
 </defaults>
 <enterprise-beans>

 <entity>
 <ejb-name>Cabin</ejb-name>
 <table-name>Cabin</table-name>
 <cmp-field>
 <field-name>shipId</field-name>
.... etc .......