Suppose Alice has r and w rights over the file book. Alice wants to copy r rights to book to Bob.Assuming there is a copy right c, write a command to do this.Now assume the system supports a copy flag; for example, the right r with the copy flag would be written as rc. In this case, write a command to do the copy.In the previous part, what happens if the copy flag is not copied?

Read access Assuming the system uses the Unix-like file permissions system, the command to give Bob…

Answered: Suppose Alice has r and w rights over…

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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Suppose Alice has r and w rights over the file book. Alice wants to copy r rights to book to Bob.
1. Assuming there is a copy right c, write a command to do this.
2. Now assume the system supports a copy flag; for example, the right r with the copy flag would be written as rc. In this case, write a command to do the copy.
3. In the previous part, what happens if the copy flag is not copied?

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