Completeness and Consistency of the System Requirement Specification

Abstract

Although the System Requirement Specification, as a first formal and detailed document, is the base for the software project in classic software methodologies, there is a noticeable problem of assuring the completeness of this document. The lack of its completeness causes uncertainty of the project foundations. This was one of motivations for agile methodologies-if the SRS cannot be easily validated, if it can change in late project phases, then get rid of the SRS. Replace formal requirements with user stories. However user stories are also requirementsmostly functional requirements. As agile methodologies focus on functional requirements, it is easy to forget quality requirements. In this paper we show the impact of quality requirements analysis on functional requirements exploration. Although in our experiment we noticed considerable large functional requirements increment, we went further and examined the impact of SRS consistency on its completeness. The research has shown that the increment of the revealed requirements count may be almost three times greater, compared to the standard requirement specification method.

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“…Much work has also been done on the requirements completeness and consistency checking. Reference [18] describes the disastrous consequences that the inconsistent and incomplete requirements bring to software development and proposes the indicators to measure the completeness and consistency of Software Requirement Specification (SRS), but the completeness and consistency need to be guaranteed manually. Reference [19] carries out the automatic consistency checking.…”

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“…Data primer ini kemudian akan diproses menjadi sebuah dokumentasi yang berisikan segala kebutuhan-kebutuhan akan sistem yang diinginkan oleh stackholder. Dokumentasi kebutuhan ini bisa disebut dengan Software Requirements Specification [4] atau disebut juga dengan Spesifikasi Kebutuhan Perangkat Lunak. Dokumen SRS ini berisikan segala kebutuhan-kebutuhan fungsional dari sistem yang diinginkan berupa query data, data categorization, print data, dan lain-lain.…”