Study about methodologies of specification of requirements and their approach refering to non-functional requirements of systems

Abstract

The Engineering Software is an approaching for the standardized development of software of any nature. Defines a set of methodologies, techniques and tools that, when well employed aid effectively the process of software development. One of the biggest difficulties of the specification of requirements is the acquirement of the non-functional requirements of the system, the ones that is about accomplishment, performance, and usability, maintainability and portability. Inside of this context, the aim of this work is to study the methodologies that approach the requirements non-functional of the system and methodologies of agile development. Thus, we’ll have analysis and comparisons between them, demonstrating its main characteristics, intending to get greater knowledge in this area, turning it spread out in the community, in a way that in the future may serves as support base for other articles. In this study, the methodologies of development of software adopted for studies had been the MERUSA (Methodology of Specification of Requirements of Usability and Safety Guided for the Architecture of the System), XP (Extreme Programming) and SCRUM, which the last two mentioned are considered agile methodologies. The obtained results are of great value, therefore the material that approaches these methodologies is scarce, mainly about MERUSA, that deals in an efficient form the requirements non-functional of the system, which many times are omitted in other methodologies.