Answer:
- It comes under the category of Technical Quality Attributes.
- It is the ability of system to accommodate maintenance.
- A system is highly maintainable if it has high correctability, testability & expandability.
- Correctability : Effort for fixing defects -> should be low.
- Testability: Effort for testing -> should be minimum.
- Expandability : Effort for accommodating changes -> should be low
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