Maintenance (Cambridge (CIE) A Level Computer Science): Revision Note
Exam code: 9618
Types of maintenance
What is program maintenance?
Program maintenance is the process of updating or improving a program after it has been delivered to the user
Unlike physical equipment, programs don’t wear out, but they may need to be changed due to errors, changing requirements, or new technology
Why maintenance is needed
To fix errors that were missed during testing
To improve performance based on user feedback
To adapt the software to new uses or platforms
Types of program maintenance
Type | Purpose | Example |
|---|---|---|
Corrective | Fixes bugs or errors found during real-world use | Fixing a bug that causes the program to crash when special characters are entered |
Perfective | Improves performance or adds small enhancements | Replacing a loading screen with a progress bar to give better user feedback |
Adaptive | Modifies the program to support new environments or requirements | Modifying the program to work on a tablet instead of just a desktop computer |
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