Access matrices are used to define the rights of users to various kinds of access for each element in a personnel database.

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An access matrix integrated into the database management system prevents people from accessing a firm's computerized personnel files.An access matrix defines the rights of users to various kinds of access (such as "read only" or "write only")to each database element.(So,those in accounting might read only information such as an employee's address.)

Access Matrices Are Used to Define the Rights of Users