Database Security & Authorization Subsystem

In a multiuser database system, the DBMS provides techniques to enable certain users or user groups to access selected portions of a database without gaining access to the rest of the database.

The Database Security and Authorization Subsystem included in a Database Management System is responsible for ensuring the security of database against unauthorized access.

The two types of database security mechanisms are:

  • Discretionary Security Mechanisms

  • Mandatory Security Mechanisms