What type of access control system is used when a table includes assigned privileges, objects, and subjects to manage access?

The correct answer is the access control matrix, which serves as a fundamental framework for defining and managing access rights within a system. In an access control matrix, each cell represents the privileges granted to various subjects (users or processes) concerning specific objects (files, tables, resources) within the system. This structure allows for a clear overview of who can access what and to what extent, making it easier to enforce security policies consistently across the organization.

This matrix approach is particularly beneficial because it can effectively display complex relationships between subjects and objects, enabling administrators to quickly identify and adjust access rights as necessary. It provides a comprehensive view that allows for more streamlined auditing and monitoring of access activities.

Other approaches, like role-based access control, access control lists, and discretionary access control, each utilize different methodologies for managing permissions and privileges, but none encapsulate the subject-object privilege assignments in the same systematic way as the access control matrix. Role-based access control organizes privileges by roles rather than directly mapping subjects to objects. Access control lists are typically linked to individual resources and specify which subjects can access that resource and in what manner, focusing more on the objects themselves rather than a broader matrix view. Discretionary access control allows users to control access to their resources but does not