In RDO only, you can use PRINT...RDB$DB_KEY to display the
    database key of the record about to be stored by the STORE
    statement. Example:

    RDO> STORE E IN EMPLOYEES USING
    cont>  E.EMPLOYEE_ID = "15231";
    cont>  E.LAST_NAME = "Smith";
    cont>   PRINT E.RDB$DB_KEY
    cont> END_STORE
                RDB$DB_KEY
                  21:339:0