Exercise 5.2.1Consider the following access-control matrix for subjects S1 S3..and objects O1.04 (the owner of each object appears in parentheses):Sub ject 01(S1)S1 read, write02(S2)read03(S3)read04(S4)readreadS2S3read, writereadreadreadreadread, writeread, writeUse the access-control logic to formulate the access-control rules for each object.

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Exercise 5.2.1 Consider the following access-control matrix for subjects S1 S3 and objects O1 04 (the owner of each object appears in parentheses): Sub ject 01(S1) S1 read, write 02(S2) read 03(S3) 04(S4) read read S2 S3 read, write read read read read read read, write read, write Use the access-control logic to formulate the access-control rules for each object.

Exercise 5.2.1 Consider the following access-control matrix for subjects S1 S3 and objects O1 04 (the owner of each object appears in parentheses): Sub ject 01(S1) S1 read, write 02(S2) read 03(S3) 04(S4) read read S2 S3 read, write read read read read read read, write read, write Use the access-control logic to formulate the access-control rules for each object.

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

Section: Chapter Questions

Problem 1PE

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