Specifies whether database tables that were automatically created when the bean(s) were last deployed are dropped when the bean(s) are undeployed. If true, drops tables from the database. If false (the default if this element is not present), does not drop tables.
This element can be overridden during deployment. See Generation Options for CMP in Sun GlassFish Enterprise Server 2.1 Developer’s Guide.
none - contains data