The Meaning and Relevance of Perfective Software Maintenance

 Software maintenance is necessary because it fixes errors and bugs within the software systems. It also improves the functioning of the software. The result is that your products become compatible with the latest business and marketing environments. Software maintenance eliminates outdated functions that could inhibit the efficiency of the product. The process also enhances software performance. One of the four categories of software maintenance is perfective maintenance. The perfective maintenance process entails implementing changes that prevent errors from happening in days to come. Perfective maintenance increases the maintainability of software, therefore reducing complexity. The tasks performed under perfective maintenance include updating documentation, code reconstruction, and code optimization. Code reconstruction entails the transformation of the structure of programs through the reduction of source codes, therefore, making the code easy to understand. Code optimization entails code modification to allow the quick execution of programs or use storage space efficiently. 

Corrective maintenance entails actions that address the faults and errors inside a software system. Software defects come from faults and errors in code, logic, and the design of the software. Corrective maintenance becomes necessary when software isn’t working properly due to acute issues like incorrect implementation, incomplete or invalid tests, and faulty flow of logic. The issues in the software affect the users after the software has been released. Bug reports are often created by software users and sent to the development company as feedback. The software developers review their code and make some corrective software improvements. The goal is to improve and enhance the software. The goal of adaptive maintenance is to modify and update software under different circumstances. Adaptive maintenance may happen when the platform where the software runs is evolving due to changing rules, policies, operating systems, and technology. The maintenance process could also happen if customers want a product to interface well with new software or hardware.

Preventative maintenance is the change made to prevent the occurrence of future errors. It enhances software maintainability through the reduction of complexity. The tasks involved include document updating, code optimization, and code reconstruction. The code documentation process is done according to the recent system state. Code optimization entails the modification of code to execute programs faster.

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