SANS 25030-2008 Software engineering - Software product Quality Requirements and Evaluation (SQuaRE) - Quality requirements《软件工程 软件产品质量要求及评估(SQuaRE) 质量要求》.pdf

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2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21377-0 SANS 25030:2008Edition 1ISO/IEC 25030:2007Edition 1SOUTH AFRICAN NATIONAL STANDARD Software engineering Software product Quality R

4、equirements and Evaluation (SQuaRE) Quality requirements This national standard is the identical implementation of ISO/IEC 25030:2007 and is adopted with the permission of the International Organization for Standardization and the International Electrotechnical Commission. Published by Standards Sou

5、th Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 25030:2008 Edition 1 ISO/IEC 25030:2007 Edition 1 Table of changes Change No. Date Scope National foreword This South Afri

6、can standard was approved by National Committee StanSA SC 71C, Information technology ICT systems and software engineering, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in May 2008. Reference numberISO/

7、IEC 25030:2007(E)ISO/IEC 2007INTERNATIONAL STANDARD ISO/IEC25030First edition2007-06-01Software engineering Software productQuality Requirements and Evaluation (SQuaRE) Quality requirements Ingnierie du logiciel Exigences de qualit et valuation du produit logiciel (SQuaRE) Exigences de qualit SANS 2

8、5030:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 25030:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited

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13、copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2007 All rights reservedSANS 25030:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .Contents Page 1 Scope . 1 2 Conformance .1 3 Normative references 1 4 Terms and defini

14、tions . 2 5 Fundamental concepts for quality requirements. 2 5.1 Software and systems. 2 5.2 Stakeholders and stakeholder requirements 3 5.3 Stakeholder requirements and system requirements 4 5.4 Software quality model . 5 5.5 Software properties. 7 5.6 Software quality measurement model . 7 5.7 Sof

15、tware quality requirements . 8 5.8 System requirements categorisation. 9 5.9 Quality requirements life cycle model . 10 6 Requirements for quality requirements. 12 6.1 General requirements and assumptions . 12 6.2 Stakeholder requirements 12 6.3 Software requirements 14 Annex A (normative) Terms and

16、 definitions 19 Annex B (informative) Processes from ISO/IEC 15288 32 Bibliography . 35 Foreword v Introduction vi ISO/IEC 2007 All rights reserved iiiISO/IEC 25030:2007(E) SANS 25030:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IE

17、C 25030:2007(E) iv ISO/IEC 2007 All rights reservedForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the de

18、velopment of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-govern

19、mental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of

20、 the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote

21、. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 25030 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technolo

22、gy, Subcommittee SC 7, Software and systems engineering. ISO/IEC 25030 is part of the ISO/IEC 25000 SQuaRE series of standards. The series consists of the following divisions under the general title Software product Quality Requirements and Evaluation (SQuaRE): ISO/IEC 2500n, Quality Management Divi

23、sion, ISO/IEC 2501n, Quality Model Division, ISO/IEC 2502n, Quality Measurement Division, ISO/IEC 2503n, Quality Requirements Division, and ISO/IEC 2504n, Quality Evaluation Division. ISO/IEC 25050 to ISO/IEC 25099 are reserved to be used for SQuaRE extension International Standards, Technical Speci

24、fications, Publicly Available Specifications (PAS) and/or Technical Reports: ISO/IEC 25051 and ISO/IEC 25062 are already published. SANS 25030:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 25030:2007(E) ISO/IEC 2007 All rights r

25、eserved vIntroduction It is important to identify and specify software quality requirements as part of specifying the requirements for a software product. Software is usually part of a larger system. System requirements and software requirements are closely related and software requirements can ther

26、efore not be considered in isolation. This International Standard focuses on software quality requirements, but takes a system perspective. Software quality requirements can be categorized by use of a quality model, for example the quality model defined in ISO/IEC 9126-1 ISO/IEC 25010. Measures of a

27、ttributes of these characteristics and their subcharacteristics can be used to specify software quality requirements and evaluate the quality of a software product. Software quality requirements address important issues of quality for software products. Software product quality requirements are need

28、ed for: specification (including contractual agreement and call for tender); planning (including feasibility analysis and translation of external software quality requirements into internal software quality requirements); development (including early identification of potential quality problems duri

29、ng development); and evaluation (including objective assessment and certification of software product quality). If software quality requirements are not stated clearly, they may be viewed, interpreted, implemented and evaluated differently by different people. This may result in software which is in

30、consistent with user expectations and of poor quality; users, clients and developers who are unsatisfied; and time and cost overruns to rework software. This International Standard aims to improve the quality of software quality requirements. It does this by providing requirements and recommendation

31、s for quality requirements, and guidance for the processes used to define and analyse quality requirements. Application of this International Standard should help ensure that software quality requirements are: in accordance with stakeholder needs; stated clearly and precisely; correct, complete, and

32、 consistent; and verifiable and measurable. This International Standard is intended to be used in conjunction with the other parts of the SQuaRE series of Standards (ISO/IEC 25000 ISO/IEC 25049), and with ISO/IEC 14598 and ISO/IEC 9126, until superseded by the ISO/IEC 25000 series. This Internationa

33、l Standard complies with the technical processes defined in ISO/IEC 15288:2002 related to quality requirements definition and analysis. SANS 25030:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 25030:2007(E) vi ISO/IEC 2007 All r

34、ights reservedFigure 1 Organisation of the ISO/IEC 25000 SQuaRE series of International Standards Figure 1 (copied from ISO/IEC 25000) illustrates the organisation of the ISO/IEC 25000 SQuaRE series representing families of International Standards, further called Divisions. The Divisions within SQua

35、RE model are: ISO/IEC 2500n, Quality Management Division. The International Standards that form this division define all common models, terms and definitions referred to further by all other International Standards from the SQuaRE series. Referring paths (guidance through SQuaRE documents) and high

36、level practical suggestions in applying proper International Standards to specific application cases offer help to all types of users. The division also provides requirements and guidance for a supporting function which is responsible for the management of software product requirements specification

37、 and evaluation. ISO/IEC 2501n, Quality Model Division. The International Standard that forms this division presents a detailed quality model including characteristics for internal, external and quality in use. Furthermore, the internal and external software quality characteristics are decomposed in

38、to subcharacteristics. Practical guidance on the use of the quality model is also provided. ISO/IEC 2502n, Quality Measurement Division. The International Standards that form this division include a software product quality measurement reference model, mathematical definitions of quality measures, a

39、nd practical guidance for their application. Presented measures apply to internal software quality, external software quality and quality in use. Measurement primitives forming foundations for the latter measures are defined and presented. ISO/IEC 2503n, Quality Requirements Division. The Internatio

40、nal Standard that forms this division helps specify quality requirements. These quality requirements can be used in the process of quality requirements elicitation for a software product to be developed or as input for an evaluation process. The requirements definition process is mapped to technical

41、 processes defined in ISO/IEC 15288. ISO/IEC 2504n, Quality Evaluation Division. The International Standards that form this division provide requirements, recommendations and guidelines for software product evaluation, whether performed by evaluators, acquirers or developers. The support for documen

42、ting a measure as an Evaluation Module is also presented. ISO/IEC 25050 to ISO/IEC 25099 are reserved to be used for SQuaRE extension International Standards and/or Technical Reports. Quality Requirements Division 2503n Quality Evaluation Division 2504n Quality Model Division 2501nQuality Measuremen

43、t Division 2502nQuality Management Division 2500nSANS 25030:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTERNATIONAL STANDARD ISO/IEC 25030:2007(E) ISO/IEC 2007 All rights reserved 1Software engineering Software product Quality Requi

44、rements and Evaluation (SQuaRE) Quality requirements 1 Scope This International Standard provides requirements and recommendations for the specification of software product quality requirements. This International Standard applies to organisations in their role as both acquirers and suppliers. The q

45、uality model in ISO/IEC 9126-1 ISO/IEC 25010 is used to categorize software quality requirements and to provide a basis for quantifying the quality requirements in terms of software quality measures. This International Standard complies with the technical processes defined in ISO/IEC 15288:2002, whi

46、ch are relevant for identification of stakeholder product quality needs and for analysis of software product quality requirements. This International Standard does not cover specification of other requirements (such as functional requirements, process requirements, business requirements, etc.). This

47、 International Standard does not prescribe specific software quality measures nor does it prescribe any specific development process. 2 Conformance Software quality requirements conform to this International Standard if they fulfil the requirements specified in Clause 6. 3 Normative references The f

48、ollowing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 9126-1:2001, Software engineering Product qual

49、ity Part 1: Quality model 1)ISO/IEC 25020, Software engineering Software product Quality Requirements and Evaluation (SQuaRE) Measurement reference model and guide 1) ISO/IEC 9126-1:2001 will be cancelled and replaced by ISO/IEC 25010. SANS 25030:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 25030:2007(E) 2 ISO/IEC 2007 All rights reserved4 Terms and definitions For the purposes of this International Standard,