Software quality assurance sqa the key objective of this service is to assure that the standards, methodology, processes and procedures of a future application project are correctly defined and established at the very beginning of the project, that they are appropriately implemented and integrated during the project, and. However, the use of metrics does not eliminate the need for human judgment in software assessment. Comparative study of the factors that affect maintainability. Maintainability is a major factor that contributing in the quality of software system. Reliability requirements deal with the failure to provide service. However, the use of metrics does not eliminate the need for human judgment. To cover together all aspects of software quality resulting from iso quality definition to describe the product quality with a minimum of overlap to be as close as possible to the established technology. Software quality factors and software quality metrics to.
Software quality assurance is a formal process for evaluating and documenting the quality of the work products during each stage of the software development lifecycle. Software quality attributes, mccalls quality factors. Buy the royaltyfree stock image what contributes to software quality factors online all image rights included high resolution picture for print. Classification of software requirements into software quality factors. Software quality assurance sv group sqa solution is based on ieee and iso standards and on many years experience in the development of our own applications, and in the control, upgrade and correction of application solutions of other companies, both in the banking sector of the republic of croatia and in projects financed by the eu.
Smart pumps have software that is programmed to reflect the facilitys infusion parameters and a drug library that compares normal dosing rates with those programmed into the pump. The combination of all 4 components is needed to assure the qualityof the development processas well as the ensuing long years of maintenance. Toward software measurement and quality analysis of marf. Expandability definition of expandability by the free dictionary. The hvh impact of methodologies on the quality of performance factors was uneven. Expandability keluwesan usaha yang dibutuhkan dalam menyediakan jaringan yang luas, meningkatkan layanan, atau menambahkan aplikasi baru untuk meningkatkan usability kegunaan. Expandability degree to which one can extend architectural, data and procedural design. Csc 408fcsc2105f lecture notes these lecture notes are. Mccall and others 5,6 identified eleven software quality factors and developed a system of metrics to predict and assess the degree of. Software quality factor identified as the criteria that will cover all software characteristics and software usage elements to ensure complete user satisfaction 23. Reliability is one of the most important aspects of software quality and it is encouraging that more than 50% of respondents reported high to very high impact on this factor. A factor is a toplevel expression of software status for management reporting. For example, modularity is an attribute of the architecture of a software system.
In order to allow for valid measurements of compliance, subfactors have been defined for those quality factors that represent a wide range. Software quality metrics are the subset of software metrics that focuses on the quality aspect of software. Ease with which the software and data can be checked for compliance with standards. Thus, the model became composed of twelve quality factors, partitioned to three groups, namely adaptation, performance and. Hardware independence degree to which the software is decoupled from its operating hardware. Successful software quality assurance is highly dependent on software metrics. Quality factor 1 quality factor 2 quality factor n quality criteria 1 quality criteria 2. The other principal aim was to implement a proofofconcept tool designed to support the resolution of software quality factor conflicts.
Software quality assurance a team devoted to encouraging and enforcing quality standards. The relative effort to transfer a program from one environment to another. Expandability requirements really refers to scalability and extensibility to provide more usability. Storing healthcare data through cloud computing would allow for expandability and increased security. The relative effort to increase the software capability or performance by enhancing current functions or adding new functions for data. The relative effort to convert a software component for use in another application. The relative effort required for using the software. Deutsch and willis factor model alternative models of software quality factors two factor models, appearing during the late 1980s, considered to be alternatives to the mccall classic factor model mccallet al. Modifiability and usabilitysoftware quality attributes. There are a number of quality models in software engineering literature, each one of these. A research framework software quality model and isoiec 25000.
Factors from the previous chapters we have already established that the requirements document is one of the most important elements for achieving sq. Degree to which storage requirements or software functions can be expanded. Software quality model for maintenance software purposes. Boukouchi youness1, 3marzak abdelaziz2, benlahmer habib and moutachaouik hicham 4 123 department of mathematics and computer science, hassan ii ben msik university, faculty of sciences, casablanca, morocco 4laboratory irfsig, ibn zohr university,faculty of science agadir, morocco abstract. Understandability if you can understand your system, you can change it. A quality criteria is an attribute of a quality factor that is related to software development. Software quality metrics are associated with process and product metrics than with project metrics. The use of software metrics reduces subjectivity in the assessment and control of software quality by providing a quantitative basis for making decisions about software quality.
It needs linkage the software quality model and software metrics through quality factors in order to offer measure. Walberla widely applicable latticeboltzmann from erlangen is a massively parallel software framework supporting a wide range of physical phenomena. Chapter 4 sqa free download as powerpoint presentation. Good software should deliver the required functionality and performance to the user and should be maintainable, dependable and usable. Software quality opre 6364 1 university of texas at dallas. Factors maintainability is a component of a more general concept, software quality, which is described in terms of a hierachy see figure 1 em87 of factors, criteria and metrics. Metrics used in this arrangement is mentioned below. Framework for measuring perceived quality in technical. Software quality software reusability software metrics software survivability software measurement software expandability software interoperability 20. The impact of software quality on maintenance process.
To illustrate various aspects of software quality, software professionals pioneered a quality model that attempted to identify factors representing the behavioral characteristics of the software system. Software engineering and willis factor model 1058 words. Software quality factor requirements software requirements a condition or capability needed by a user to solve a problem or achieve an objective that must be met or possessed by a system or system component to satisfy a contract, standard, specification, or other. Software quality factors and software quality metrics to enhance software quality assurance mingchang lee 1 1national kaohsiung university of applied sciences taiwan, 415 chien kung road, kaohsiung, taiwan. Quality factors the software s product compliance to the requirements belonging to the various quality factors is measured by software quality metrics, measures that quantify the degree of compliance.
The use of software metrics within an organization is expected to have a beneficial effect by making software quality more visible. Authors contribution this whole work was carried out by authors mcl. Software maintenance traditionally, software maintenance is defined as any. Auditability ease with which the conformance to standards can be verified. Software quality assurance opre 6364 5 s oftware quality involves e nsuring conformance with user requirements i dentifying defects in early phases of development m onitoring the products through its phases of development q uality assurance during the development a chieved through structured walkthroughs also known as. Software quality metrics can be divided further into endproduct quality metrics and inprocess quality metrics. Toward software measurement and quality analysis of marf and gipsy case studies a. Tulisan ini diambil dari bahan persentasi dikelas, langsung saja. Software quality factors a software quality factor is a nonfunctional requirement for a software program which is not called up by the customers contract, but nevertheless is a desirable requirement which enhances the quality of the software program. The current implementation of the assistant for the specification of quality software 3 does not completely address the quality factor. The impact of software process improvement on quality. Each factor was subsequently associated with at least two or more software quality attributes used to enforce the definition of a specific.
Quality assurance management quality factors software. The evans and marciniak factor model evans and marciniak, 1987. Software quality metrics application in quality life cycle with software quality assurance. Contribution of multicriteria methodology to software. According to mccalls model, three software quality factors are included in the product transition category that deals with the adaptation of software to other environments and its interaction with other software systems. Reliability had the highest impact, followed by usability and testability.
Expandability definition of expandability by the free. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The architecture plays an important factor in the software success or failure. This article describes the software designs realizing the major goal of the framework, a good balance between expandability and scalable, highly optimized, hardware. Received 31 st march 2014 accepted 1st may 2014 published 2nd.
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