Specifies whether database tables are created for beans that are automatically mapped by the EJB container. If true, creates tables in the database. If false (the default if this element is not present), does not create tables.
This element can be overridden during deployment. See Generation Options for CMP in Sun GlassFish Enterprise Server 2.1 Developer’s Guide.
cmp-resource (sun-ejb-jar.xml)
none - contains data