Consider user accounts on a computer system with a Web server configured to provide user Web areas. In general, this uses a standard directory name, such as “public_html,” in a user’s home directory. However, access control needs to be properly set to allow users (with or without user accounts on the system) to browse the webpages. Assuming there are one main page (index.html), two pictures files (a.jpg and b.jpg) stored in an sub-directory (Image) and one pdf file (c.pdf) stored in an sub-directory (Doc), all under the public_html. (a) Specify the access matrix for each directory (excluding home directory) and files that allows everyone to view the webpage. (b) Draw a directed graph that represented to the access 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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Consider user accounts on a computer system with a Web server configured to

provide user Web areas. In general, this uses a standard directory name, such as

“public_html,” in a user’s home directory. However, access control needs to be properly set

to allow users (with or without user accounts on the system) to browse the webpages.

Assuming there are one main page (index.html), two pictures files (a.jpg and b.jpg) stored in

an sub-directory (Image) and one pdf file (c.pdf) stored in an sub-directory (Doc), all under

the public_html.

(a) Specify the access matrix for each directory (excluding home directory) and files that allows everyone to view the webpage.

(b) Draw a directed graph that represented to the access matrix

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