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Questions and Answers
What is the main objective of classifying the types of software maintenance based on objective evidence?
What is the main objective of classifying the types of software maintenance based on objective evidence?
- To eliminate the need for accessing the knowledge of the personnel who originally developed the system (correct)
- To make the classification groups independent of hardware platform and operating system choice
- To verify maintenance tasks with observations
- To reflect the actual mix of activities observed in the practice of software maintenance and evolution
What does the proposed classification of software maintenance aim to accurately reflect?
What does the proposed classification of software maintenance aim to accurately reflect?
- The mix of activities observed in the practice of software maintenance and evolution (correct)
- The design methodology and implementation language
- The hardware platform and operating system choice
- The knowledge of the personnel who originally developed the system
Why is it more informative to classify maintenance tasks based on objective evidence?
Why is it more informative to classify maintenance tasks based on objective evidence?
- It can be verified with observations (correct)
- It requires accessing the knowledge of the personnel who originally developed the system
- It reflects the mix of activities observed in software maintenance
- It is independent of organizational practices
What does the proposed classification of software maintenance not require?
What does the proposed classification of software maintenance not require?
What does the granularity of the proposed classification aim to accurately reflect?
What does the granularity of the proposed classification aim to accurately reflect?
What are the classification groups independent of?
What are the classification groups independent of?
Which category of software maintenance involves making the system adapt to changes in its data or processing environment?
Which category of software maintenance involves making the system adapt to changes in its data or processing environment?
What is an example of a situation that can be described as corrective maintenance?
What is an example of a situation that can be described as corrective maintenance?
Which activity falls under perfective maintenance?
Which activity falls under perfective maintenance?
What is a preventive maintenance measure to prevent the occurrences of failures due to continuously running software?
What is a preventive maintenance measure to prevent the occurrences of failures due to continuously running software?
What is the main focus of corrective maintenance?
What is the main focus of corrective maintenance?
What does perfective maintenance aim to improve?
What does perfective maintenance aim to improve?
Which category of software maintenance is often performed on safety critical and high available software systems?
Which category of software maintenance is often performed on safety critical and high available software systems?
What type of failure does adaptive maintenance aim to prevent?
What type of failure does adaptive maintenance aim to prevent?
What is an example of a situation that can be described as perfective maintenance?
What is an example of a situation that can be described as perfective maintenance?
What does adaptive maintenance involve changing in a system?
What does adaptive maintenance involve changing in a system?
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Study Notes
Classification of Software Maintenance
- The main objective of classifying software maintenance types based on objective evidence is to accurately reflect the underlying reasons for maintenance.
- The proposed classification aims to accurately reflect the underlying reasons for maintenance, rather than relying on subjective or arbitrary labels.
Advantages of Objective Evidence Classification
- Classifying maintenance tasks based on objective evidence is more informative as it provides a clear understanding of the reasons behind maintenance activities.
- This approach does not require arbitrary or subjective labels, making it more reliable and consistent.
Granularity of Classification
- The granularity of the proposed classification aims to accurately reflect the underlying reasons for maintenance, providing a more detailed and nuanced understanding of maintenance activities.
Independence of Classification
- The classification groups are independent of the specific maintenance tasks or activities, focusing on the underlying reasons for maintenance.
Types of Software Maintenance
- Adaptive Maintenance: involves making the system adapt to changes in its data or processing environment.
- Corrective Maintenance: involves fixing errors or faults, for example, debugging a software issue that causes a program to crash.
- Perfective Maintenance: aims to improve the software's performance, maintainability, or other quality attributes, for example, refactoring code to make it more efficient.
Focus and Goals of Maintenance
- The main focus of corrective maintenance is to fix errors or faults.
- Perfective maintenance aims to improve the software's quality attributes, such as performance, maintainability, or usability.
- Adaptive maintenance aims to prevent failures due to changes in the system's environment.
Preventive Maintenance
- An example of a preventive maintenance measure is to implement a system restart or failover to prevent failures due to continuously running software.
Safety Critical and High Availability Systems
- Adaptive Maintenance is often performed on safety-critical and high-availability software systems to prevent failures due to environmental changes.
Failure Prevention
- Adaptive maintenance aims to prevent failures due to environmental changes, such as changes in hardware or software configurations.
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