What Is Software Maintenance?
In software engineering, software maintenance refers to the modifications applied to a software product after its initial delivery. These updates are…
In the context of software engineering, the term software maintenance refers to the modifications made to a software product after delivery, with the aim of correcting defects, improving performance, or enhancing any of its features.
Table of Contents
Software Maintenance
Types of Software Maintenance
Reasons for Software Maintenance
Software Maintenance Steps
Software Maintenance
Software maintenance is defined as the process by which software is updated, new tasks are incorporated, bugs are corrected, and programming issues are resolved. This is often structured through maintenance contracts between software companies and their clients, usually calculated as an annual fee based on a percentage of the total software cost.
Types of Software Maintenance
There are four types of software maintenance, as follows:
Adaptive Maintenance: This occurs as a result of internal changes to an organization's software systems, such as migrating software to new hardware, compilers, or operating systems. It ensures the software adapts to external requirements, stays modern, and continues to meet user and business needs.
Corrective Maintenance: The core of corrective maintenance lies in modifying and improving faulty systems and software. This involves adjusting program code, software structures, and software alerts. This necessity arises either from user feedback or error reports generated by the software, with repairs ranging from emergency fixes to scheduled maintenance.
Preventive Maintenance: In this process, software is restructured—often referred to as software re-engineering—to prevent future technical problems. It makes the software easier to understand and improves its features, thereby facilitating easier maintenance in the long run.
Perfective Maintenance: This involves additional modifications to the software to keep it usable for as long as possible, which reduces usage and maintenance costs, increases speed and reliability, and introduces new features.
Reasons for Software Maintenance
- The need for software maintenance arises due to the following conditions and factors: Market changes and organizational policies, such as new regulations imposed on institutions (e.g., changes in tax systems or accounting processes), which require software adjustments.
Client requirements: Clients often request modifications to their business settings and the addition of new features to their software.
Changes in host software or hardware: If any hardware or operating systems are changed, it is necessary to adjust the software structure to ensure compatibility.
Organizational level adjustments: Organizations may undergo structural changes, which often necessitate corresponding modifications to their software.
Software Maintenance Steps
The software maintenance process includes the following steps:
Identifying software change requirements by recording feedback or error messages generated by the software.
Analyzing software maintainability, including system security and integrity; if modifications are costly, an alternative is sought.
Designing new procedures that require modification by testing them to ensure their effectiveness.
Implementing new code for modules designed in the previous phase, where each programmer is required to test their programmed unit in parallel with other units.
Conducting integration testing for the new modules with the overall system.
Delivering and deploying the system throughout the organization, followed by final testing on-site after delivery, and providing user training if necessary.
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