COMPUTER SCIENCE ILLUMIN.-TEXT
COMPUTER SCIENCE ILLUMIN.-TEXT
6th Edition
ISBN: 2810016866372
Author: Dale
Publisher: JONES+BART
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Chapter 11, Problem 52E

Explanation of Solution

Justification:

  • The hard disk drive is a device, used for storage purpose.
    • It consists of group of cylinders attached to an arm along with the read/write head.
    • The surface of the disk is composed of group of concentric tracks called cylinder.
    • Logically, the surface of the disk is divided into tracks.
  • To access the block of information, the read/write head is placed on the appropriate tracks.
    • The read/write head moves from one track to another while reading or writing.
    • Seek time is the time required to position the read/write head over the particular track...

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SQL Injection on UPDATE Statement for educational purpose only  Based on the information below how do i update this code in order to update the emplyees field, eg admin nickname, email,address, phone number etc? ' ; UPDATE users SET NickName='Hacked' WHERE role='admin' --  If a SQL injection vulnerability happens to an UPDATE statement, the damage will be more severe, because attackers can use the vulnerability to modify databases. In our Employee Management application, there is an Edit Profile page (Figure 2) that allows employees to update their profile information, including nickname, email, address, phone number, and password. To go to this page, employees need to log in first. When employees update their information through the Edit Profile page, the following SQL UPDATE query will be executed. The PHP code implemented in unsafe edit backend.php file is used to update employee’s profile information. The PHP file is located in the /var/www/SQLInjection directory.
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