Zone objects are created, modified, and dropped in the same way as any other Teradata database object; an object exists only inside its own zone. Tables, triggers, and macros that are created inside a zone are zone objects. Objects such as roles and profiles, which are not qualified by database names, are only accessible inside the zone in which they are created. Security constraints are an exception. Security constraints that are created outside a zone can be assigned to zone users. Security constraints that are created inside a zone can be assigned to users who are outside the zone.