Requirements Validation in the Information System Software Development Lifecycle: A Software Quality in Use Evaluation

Abstract

The Peruvian government adopted the ISO/IEC 12207 standard and established its mandatory implementation in public entities to improve the quality of the software products. In this context, software requirements validation tasks were introduced to improve the quality of the software product. In this study, the relationship between the improvement of software requirement quality and the software product quality in use was explored and analyzed. Analysis was based on the design of software product quality-in-use and the measure of metrics from ISO/IEC 25010 standard in two software products. The results show that the validation activities introduced in the software requirements stage have a positive relationship with the quality in use of the software products analyzed. In the software studied, it can be said that the improvement of the quality of the requirements has contributed to the improvement of the quality in use of software products. In this case, it has increased time efficiency to complete tasks by 45%, reduced errors for a task by 40%, the number of tasks with errors by 47%, the cost of time to perform tasks by 29%, and unnecessary actions by 53%. In addition, overall satisfaction, user pleasure, information quality, and interfaces quality are the metrics that significantly improve.