Like every system, Teradata has a super user, and this super user is called DBC. DBC is the super parent in the database hierarchy, and subsequent database/user are children or inherit from it only.
Teradata introduced its first system, named DBC/1012, in the early 1980s. Teradata in its early release only used to connect to mainframe systems, but with subsequent advancements, it started to connect to a whole lot of applications and databases.
As seen in the following screenshot, DBC sits at the top of the pyramid:
Teradata recommends not using this user; instead, create an admin user under DBC and use that. But in certain cases, you might need a DBC user, for example, if you want to grant access to other super users. Like other users, the DBC user can also be locked if multiple wrong attempts are made to log in.
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