DBEUserIDs A DBEUserID is made up of a user's MPE XL user and account names connected with the @ symbol. An example is WOLFGANG@DBMS, where Wolfgang is the user name, and DBMS is the account name. When a DBEnvironment is configured, ALLBASE/SQL grants DBA authority to the DBEUserID of the DBECreator. You cannot revoke DBA authority from the DBECreator.