Specifies the name of the realm used to process all authentication requests associated with this application. If this element is not specified or does not match the name of a configured realm, the default realm is used. For more information about realms, see Realm Configuration in Sun GlassFish Enterprise Server 2.1 Developer’s Guide.
sun-application (sun-application.xml), as-context, login-config (sun-ejb-jar.xml)
none - contains data