Database security entails allowing or disallowing user actions on the database and the objects within it. We uses schemas and security domains to control access to data and to restrict the use of various database resources.
We provides comprehensive discretionary access control. Discretionary access control regulates all user access to named objects through privileges. A privilege is permission to access a named object in a prescribed manner; for example, permission to query a table. Privileges are granted to users at the discretion of other users.