ACLS to maintain its protection matrix.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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60. Suppose a system uses ACLS to maintain its protection matrix. Write a set of man-
agement functions to manage the ACLS when (1) a new object is created; (2) an object
is deleted; (3) a new domain is created; (4) a domain is deleted; (5) new access rights
(a combination of r, w, x) are granted to a domain to access an object; (6) existing ac-
cess rights of a domain to access an object are revoked; (7) new access rights are grant-
ed to all domains to access an object; (8) access rights to access an object are revoked
from all domains.
Transcribed Image Text:60. Suppose a system uses ACLS to maintain its protection matrix. Write a set of man- agement functions to manage the ACLS when (1) a new object is created; (2) an object is deleted; (3) a new domain is created; (4) a domain is deleted; (5) new access rights (a combination of r, w, x) are granted to a domain to access an object; (6) existing ac- cess rights of a domain to access an object are revoked; (7) new access rights are grant- ed to all domains to access an object; (8) access rights to access an object are revoked from all domains.
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