Chapter 9, Problem 9.8E

Explanation of Solution

Software maintenance:

In order to correct faults and to improve performance and other attributes after delivery various software modification techniques are used.

The three main types of software maintenance are:

• Corrective maintenance: Corrective maintenance or fault repair are the changes made to the system to repair reported faults which may be program bugs or specification errors or omissions.
• Adaptive maintenance: Adaptive maintenance or environmental adaptations is the change in software to adapt it to changes in its environment such as changes to other software systems.
• Perfective maintenance: Perfective maintenance or functionality addition involves adding new functionality or features to the system...