1、BS ISO/IEC 25023:2016Systems and softwareengineering Systems andsoftware Quality Requirementsand Evaluation (SQuaRE) Measurement of system andsoftware product qualityBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO/IEC 25023:2016 BRITISH STANDARDNational forewo
2、rdThis British Standard is the UK implementation of ISO/IEC25023:2016. It supersedes PD ISO/IEC TR 9126-2:2003 andPD ISO/IEC TR 9126-3:2003 which are withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee IST/15, Software and systems engineering.A list of organizations
3、 represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0
4、 580 82355 8ICS 35.080Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO
5、/IEC 25023:2016Systems and software engineering Systems and software Quality Requirements and Evaluation (SQuaRE) Measurement of system and software product qualityIngnierie des systmes et du logiciel Exigences de qualit et valuation des systmes et du logiciel (SQuaRE) Mesurage de la qualit du produ
6、it logiciel et du systmeINTERNATIONAL STANDARDISO/IEC25023Reference numberISO/IEC 25023:2016(E)First edition2016-06-15 ISO/IEC 2016BS ISO/IEC 25023:2016ii ISO/IEC 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO/IEC 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specifie
7、d, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs
8、member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO/IEC 25023:2016(E)BS ISO/IEC 25023:2016ISO/IEC 25023:2016(E)Foreword vIntroduction vi1 Scope . 12 Confo
9、rmance . 23 Normative references 24 Terms and definitions . 25 Abbreviated terms 46 Use of system and software product quality measures 46.1 System/software product quality measurement concepts . 46.2 Approach to quality measurement 57 Format used for documenting the quality measures . 78 System and
10、 software product quality measures . 78.1 General . 78.2 Functional suitability measures . 88.2.1 Functional completeness measures 88.2.2 Functional correctness measures 88.2.3 Functional appropriateness measures . 98.3 Performance efficiency measures. 98.3.1 Time behaviour measures 108.3.2 Resource
11、 utilization measures 118.3.3 Capacity measures .128.4 Compatibility measures . 138.4.1 Co-existence measures 138.4.2 Interoperability measures 138.5 Usability measures . 148.5.1 Appropriateness recognizability measures .148.5.2 Learnability measures .158.5.3 Operability measures 168.5.4 User error
12、protection measures 188.5.5 User interface aesthetics measures 188.5.6 Accessibility measures .198.6 Reliability measures 198.6.1 Maturity measures 208.6.2 Availability measures 208.6.3 Fault tolerance measures 218.6.4 Recoverability measures 228.7 Security measures . 228.7.1 Confidentiality measure
13、s . 228.7.2 Integrity measures 238.7.3 Non-repudiation measures 248.7.4 Accountability measures 248.7.5 Authenticity measures .248.8 Maintainability measures . 258.8.1 Modularity measures 258.8.2 Reusability measures 258.8.3 Analysability measures .268.8.4 Modifiability measures 278.8.5 Testability
14、measures 278.9 Portability measures . 288.9.1 Adaptability measures .288.9.2 Installability measures 29 ISO/IEC 2016 All rights reserved iiiContents PageBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E)8.9.3 Replaceability measures 30Annex A (informative) Considerations for the use of quality measures .31A
15、nnex B (informative) QMEs used to define product or system quality measures .36Annex C (informative) Detailed explanation of measurement types .39Bibliography .45iv ISO/IEC 2016 All rights reservedBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E)ForewordISO (the International Organization for Standardizati
16、on) 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 development of International Standards through technical committees established by the respective organization to d
17、eal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and
18、IEC have established a joint technical committee, ISO/IEC JTC 1.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of document should
19、 be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).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 f
20、or identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the
21、convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Fore
22、word - Supplementary informationThe committee responsible for this document is ISO/IEC JTC 1, Information technology, SC 7, Software and systems engineering.This first edition of ISO/IEC 25023, which is a part of the SQuaRE series of standards, cancels and replaces ISO/IEC TR 9126-2:2003 and ISO/IEC
23、 TR 9126-3:2003, with the following changes: the quality measures contained in ISO/IEC/TR 9126-2 and ISO/IEC/TR 9126-3 are reviewed and adopted or rejected according to the practical usefulness; in addition, the other quality measures are given for the revised system/software product quality model i
24、n ISO/IEC 25010; the internal and external measures are aggregated and represented with a simplified format in one table.The SQuaRE series of International Standards consist of the following divisions, under the general title Systems and software Quality Requirements and Evaluation (SQuaRE): ISO/IEC
25、 2500n Quality Management Division ISO/IEC 2501n Quality Model Division ISO/IEC 2502n Quality Measurement Division ISO/IEC 2503n Quality Requirements Division ISO/IEC 2504n Quality Evaluation Division ISO/IEC 25050 to ISO/IEC 25099 SQuaRE Extension DivisionAnnexes A, B and C are for information only
26、. ISO/IEC 2016 All rights reserved vBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E)IntroductionThis International Standard is a part of the SQuaRE series of International Standards. It provides a set of quality measures for the characteristics of system/software products that can be used for specifying r
27、equirements, measuring and evaluating the system/software product quality, in conjunction with other SQuaRE series of International Standards, especially ISO/IEC 25010, ISO/IEC 25030, ISO/IEC 25040 and ISO/IEC 25041.The set of quality measures in this International Standard were selected based on th
28、eir practical value and are categorized into two levels of reliability. They are not intended to be exhaustive and users of this International Standard are encouraged to refine them if necessary.Quality measurement divisionThis International Standard is a part of the ISO/IEC 2502n series that curren
29、tly consists of the following International Standards: ISO/IEC 25020 Measurement reference model and guide: provides a reference model and guide for measuring the quality characteristics defined in ISO/IEC 2501n quality model division. ISO/IEC 25021 Quality measure elements: provides a format for sp
30、ecifying quality measure elements and some examples of quality measure elements (QMEs) that can be used to construct software quality measures. ISO/IEC 25022 Measurement of quality in use: provides measures including associated measurement functions for the quality characteristics in the quality in
31、use model. ISO/IEC 25023 Measurement of system and software product quality: provides measures including associated measurement functions for the quality characteristics in the product quality model. ISO/IEC 25024 Measurement of data quality: provides measures including associated measurement functi
32、ons for the quality characteristics in the data quality model.Figure 1 depicts the relationship between this International Standard and the other International Standards in the ISO/IEC 2502n division. Developers, evaluators, quality managers, acquirers, suppliers, maintainers and users of target sys
33、tem/software product can select measures from these International Standards for the measurement of quality characteristics of interest. This could be for defining requirements, evaluating system/software products, performing quality management activities or for other purposes.vi ISO/IEC 2016 All rig
34、hts reservedBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E)Figure 1 Structure of the Quality Measurement DivisionOutline and organization of SQuaRE seriesThe SQuaRE series consists of five main divisions and extension division. Outline of each divisions within SQuaRE series are as follows. ISO/IEC 2500n
35、Quality Management Division. The standards that form this division define all common models, terms, and definitions referred further by all other standards from SQuaRE series. The division also provides requirements and guidance for the planning and management of a project. ISO/IEC 2501n Quality Mod
36、el Division. The standards that form this division provide quality models for system/software products, quality in use, and data. A service quality model is under development. Practical guidance on the use of the quality model is also provided. ISO/IEC 2502n Quality Measurement Division. The standar
37、ds that form this division include a system/software product quality measurement reference model, definitions of quality measures, and practical guidance for their application. This division presents internal measures of software quality, external measures of software quality, quality in use measure
38、s, and data quality measures. Quality measure elements forming foundations for the quality measures are defined and presented. ISO/IEC 2503n Quality Requirements Division. The standards that form this division help specify quality requirements. These quality requirements can be used in the process o
39、f quality ISO/IEC 2016 All rights reserved viiBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E)requirements elicitation for a system/software product to be developed, designing a process for achieving necessary quality, or as inputs for an evaluation process. ISO/IEC 2504n Quality Evaluation Division. The
40、standards that form this division provide requirements, recommendations, and guidelines for system/software product evaluation, whether performed by independent evaluators, acquirers, or developers. The support for documenting a measure as an Evaluation Module is also presented.ISO/IEC 25050 to ISO/
41、IEC 25099 are reserved for SQuaRE extension International Standards, which currently include ISO/IEC 25051 and ISO/IEC 25060 to ISO/IEC 25069.viii ISO/IEC 2016 All rights reservedBS ISO/IEC 25023:2016Systems and software engineering Systems and software Quality Requirements and Evaluation (SQuaRE) M
42、easurement of system and software product quality1 ScopeThis International Standard defines quality measures for quantitatively evaluating system and software product quality in terms of characteristics and subcharacteristics defined in ISO/IEC 25010 and is intended to be used together with ISO/IEC
43、25010. It can be used in conjunction with the ISO/IEC 2503n and the ISO/IEC 2504n standards or to more generally meet user needs with regard to software product or system quality.This International Standard contains the following: a basic set of quality measures for each characteristic and subcharac
44、teristics; an explanation of how to apply software product and system quality measures.It includes, as informative annexes, considerations for the use of quality measures (Annex A), QMEs used to define product or system quality measures (Annex B), and detailed explanation of measurement types (Annex
45、 C).This International Standard does not assign ranges of values of the measures to rated levels or to grades of compliance because these values are defined based on the nature of the system, product or a part of the product, and depending on factors such as category of the software, integrity level
46、, and users needs. Some attributes could have a desirable range of values, which does not depend on specific user needs but depends on generic factors; for example, human cognitive factors.The proposed quality measures are primarily intended to be used for quality assurance and improvement of system
47、 and software products during or post the development life cycle process.The main users of this International Standard are people carrying out quality requirement specification and evaluation activities as part of the following: development: including requirements analysis, design specification, cod
48、ing and testing through acceptance during the life cycle process; quality management: systematic examination of the software product or computer system, for example, when evaluating system or software product quality as part of quality assurance, quality control and quality certification; supply: a
49、contract with the acquirer for the supply of a system, software product or software service under the terms of a contract, for example, when validating quality at qualification test; acquisition: including product selection and acceptance testing, when acquiring or procuring a system, software product or software service from a supplier; maintenance: improvement of the software product or system based on quality measurement.INTERNATIONAL STANDARD ISO/IEC 25023:2016(E) ISO/IEC
