Secure zones allow you to create one or more exclusive database hierarchies, called zones, within a single Teradata database system. Access to the data in each zone and zone administration is handled separately from the Teradata database system and from other zones. Each zone can have a DBA for that zone.
Secure zones are useful in situations where the access to data must be tightly controlled and restricted. You can also use secure zones to support some regulatory compliance requirements for the separation of data access from database administration duties. Other uses include separating and securing data by corporate division or by cloud storage tenant.
Sites that use Secure Zones should revoke SELECT privileges granted directly on DBC tables and grant access to DBC tables through views only. This prevents users from accessing information not related to their zones.