Access to Teradata Vantage objects is controlled primarily by object level user privileges. Object level privileges are discretionary, that is, object owners automatically have the right to grant access on any owned object to any other user.
In addition to object level privileges, you can use row level security to control user access by table row and by SQL operation. Row level security access rules are based on the comparison of the row level security access capabilities of each user and the row level security access requirements for each row.
Object owners do not have discretionary privileges to grant row access to other users. Only users with security constraint administrative privileges can manage row level access controls.