Middle-tier applications are situated between end users and Teradata Vantage. When a middle-tier application accesses Vantage, it must log on as a permanent Vantage user and establish a session pool, after which end users can access Vantage through the application.
- If you implement trusted sessions, you can authorize database privileges for application users individually. For information on establishing trusted sessions and assigning user privileges, see Working with Middle-Tier Application Users.
- If you do not implement trusted sessions, all application users take on the identity and privileges of the application logon username. This strategy is not recommended because in this situation Vantage is unable to track users as individuals.