11 Questions
What is one of the challenges associated with design errors in software maintenance?
They take a lot of time to repair
Why are adaptive changes in software maintenance not easy?
Due to lack of information about the modifications
In the context of software maintenance, what makes program comprehension a key issue?
It demands a significant amount of time to read and understand the code
What is one difficulty related to adaptive changes in software maintenance?
Deficiency of information about what the software is being modified to
Why are problems due to unbalanced preliminary design a concern in software maintenance?
They are difficult to address and fix
What percentage of the total development cost is consumed by software maintenance according to various research studies?
60% to 80%
What is one of the key challenges in software maintenance related to proposed modifications?
Impact analysis
Why is finding the correct place to make corrective changes in software maintenance a major issue?
Preliminary design reduction may lead to architecture changes.
What action involves assessing the probable effects of a change in software maintenance?
Impact analysis
Which part of software maintenance incurs costs mainly due to enhancements?
Maintaining the existing code
Why are subsequent problems harder to solve after a complete workaround of one issue?
The next problems are more complex.
Study Notes
Problems of Software Maintenance
- Software maintenance consumes 60% to 80% of the cost in the entire development life cycle.
- The main driver of maintenance costs is enhancements, rather than corrections.
Impact Analysis
- Impact analysis is the process of assessing the probable effects of a change to reduce sudden side effects.
- It involves evaluating the correctness of a proposed modification, risks, and estimates of the effects on properties, energy, and development.
Corrective Changes
- Corrective changes are a major challenge due to difficulties in finding the correct place to make changes.
- Recognizing the code base can be challenging, and a small change may require significant architecture changes.
- Design errors are tough to repair, requiring a lot of time and understanding of the entire code base, and are linked to risks.
Adaptive Changes
- Adaptive changes are difficult due to lack of information about the software's intended modifications.
- Adjusting to new technology can be challenging, and impact analysis and discovering interfaces are difficult.
- Problems due to unbalanced preliminary design are a significant concern.
Program Comprehension
- Program comprehension is a key issue, requiring maintenance engineers to spend a significant amount of time reading and understanding the code.
- Relevant documentation is essential to understand the code's logic, purpose, and structure to maintain and enhance software quality.
Explore the various technical and managerial challenges faced during software maintenance, including high costs and impact analysis. Understand the deficiencies in the software development process that contribute to these issues.
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