1、BS ISO/IEC 25023:2016 Systems and software engineering Systems and software Quality Requirements and Evaluation (SQuaRE) Measurement of system and software product quality BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO/IEC 25023:2016 BRITISH STANDARD Nationa
2、l foreword This British Standard is the UK implementation of ISO/IEC 25023:2016. It supersedes PD ISO/IEC TR 9126-2:2003 and PD ISO/IEC TR 9126-3:2003 which are withdrawn. The UK participation in its preparation was entrusted to Technical Committee IST/15, Software and systems engineering. A list of
3、 organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Lim
4、ited 2016 ISBN 978 0 580 82355 8 ICS 35.080 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2016. Amendments/corrigenda issued since publication Date T
5、e x t a f f e c t e dBS ISO/IEC 25023:2016 Systems and software engineering Systems and software Quality Requirements and Evaluation (SQuaRE) Measurement of system and software product quality Ingnierie des systmes et du logiciel Exigences de qualit et valuation des systmes et du logiciel (SQuaRE) M
6、esurage de la qualit du produit logiciel et du systme INTERNATIONAL STANDARD ISO/IEC 25023 Reference number ISO/IEC 25023:2016(E) First edition 2016-06-15 ISO/IEC 2016 BS ISO/IEC 25023:2016ii ISO/IEC 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2016, Published in Switzerland All rig
7、hts reserved. Unless otherwise specified, 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 e
8、ither ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO/IEC 25023:2016(E)BS ISO/IEC 25023:2016ISO/IEC 25023:201
9、6(E)Foreword v Introduction vi 1 Scope . 1 2 Conformance . 2 3 Normative references 2 4 T erms and definitions . 2 5 Abbreviated terms 4 6 Use of system and software product quality measures 4 6.1 System/software product quality measurement concepts . 4 6.2 Approach to quality measurement 5 7 Format
10、 used for documenting the quality measures . 7 8 System and software product quality measures . 7 8.1 General . 7 8.2 Functional suitability measures . 8 8.2.1 Functional completeness measures 8 8.2.2 Functional correctness measures 8 8.2.3 Functional appropriateness measures . 9 8.3 Performance eff
11、iciency measures. 9 8.3.1 Time behaviour measures 10 8.3.2 Resource utilization measures 11 8.3.3 Capacity measures .12 8.4 Compatibility measures .13 8.4.1 Co-existence measures 13 8.4.2 Interoperability measures 13 8.5 Usability measures .14 8.5.1 Appropriateness recognizability measures .14 8.5.2
12、 Learnability measures .15 8.5.3 Operability measures 16 8.5.4 User error protection measures 18 8.5.5 User interface aesthetics measures 18 8.5.6 Accessibility measures . 19 8.6 Reliability measures 19 8.6.1 Maturity measures 20 8.6.2 Availability measures 20 8.6.3 Fault tolerance measures 21 8.6.4
13、 Recoverability measures 22 8.7 Security measures .22 8.7.1 Confidentiality measures .22 8.7.2 Integrity measures 23 8.7.3 Non-repudiation measures 24 8.7.4 Accountability measures 24 8.7.5 Authenticity measures .24 8.8 Maintainability measures .25 8.8.1 Modularity measures 25 8.8.2 Reusability meas
14、ures 25 8.8.3 Analysability measures .26 8.8.4 Modifiability measures 27 8.8.5 Testability measures 27 8.9 Portability measures .28 8.9.1 Adaptability measures .28 8.9.2 Installability measures 29 ISO/IEC 2016 All rights reserved iii Contents PageBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E)8.9.3 Repla
15、ceability measures 30 Annex A (informative) Considerations for the use of quality measures .31 Annex B (informative) QMEs used t o define pr oduct or s y st em quality measur es .36 Annex C (informative) Detailed explanation of measurement types .39 Bibliography .45 iv ISO/IEC 2016 All rights reserv
16、edBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E) Foreword 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 developm
17、ent 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-governmental
18、, 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. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directi
19、ves, Part 1. In particular the different approval criteria needed for the different types of document should 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 t
20、he 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. 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 decla
21、rations received (see www.iso.org/patents). Any trade name used in this document is information given for the 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
22、about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/IEC JTC 1, Information technology, SC 7, Software and systems engineering. This first edition of ISO/IEC
23、25023, which is a part of the SQuaRE series of standards, cancels and replaces ISO/IEC TR 9126-2 :2003 and ISO/IEC 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 use
24、fulness; in addition, the other quality measures are given for the revised system/software product quality model in 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 foll
25、owing divisions, under the general title Systems and software Quality Requirements and Evaluation (SQuaRE): ISO/IEC 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 Eval
26、uation Division ISO/IEC 25050 to ISO/IEC 25099 SQuaRE Extension Division Annexes A, B and C are for information only. ISO/IEC 2016 All rights reserved vBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E) Introduction This International Standard is a part of the SQuaRE series of International Standards. It pr
27、ovides a set of quality measures for the characteristics of system/software products that can be used for specifying requirements, measuring and evaluating the system/software product quality, in conjunction with other SQuaRE series of International Standards, especially ISO/IEC 25010, ISO/IEC 25030
28、, ISO/IEC 25040 and ISO/IEC 25041. The set of quality measures in this International Standard were selected based on their 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
29、 if necessary. Quality measurement division This International Standard is a part of the ISO/IEC 2502n series that currently consists of the following International Standards: ISO/IEC 25020 Measurement reference model and guide: provides a reference model and guide for measuring the quality characte
30、ristics defined in ISO/IEC 2501n quality model division. ISO/IEC 25021 Quality measure elements: provides a format for specifying 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 qualit
31、y in use: provides measures including associated measurement functions for the quality characteristics in the quality in use model. ISO/IEC 25023 Measurement of system and software product quality: provides measures including associated measurement functions for the quality characteristics in the pr
32、oduct quality model. ISO/IEC 25024 Measurement of data quality: provides measures including associated measurement functions 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 I
33、SO/IEC 2502n division. Developers, evaluators, quality managers, acquirers, suppliers, maintainers and users of target system/software product can select measures from these International Standards for the measurement of quality characteristics of interest. This could be for defining requirements, e
34、valuating system/software products, performing quality management activities or for other purposes.vi ISO/IEC 2016 All rights reservedBS ISO/IEC 25023:2016ISO/IEC 25023:2016(E) Figure 1 Structure of the Quality Measurement Division Outline and organization of SQuaRE series The SQuaRE series consists
35、 of five main divisions and extension division. Outline of each divisions within SQuaRE series are as follows. ISO/IEC 2500n 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.
36、 The division also provides requirements and guidance for the planning and management of a project. ISO/IEC 2501n Quality Model 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.
37、 Practical guidance on the use of the quality model is also provided. ISO/IEC 2502n Quality Measurement Division. The standards that form this division include a system/software product quality measurement reference model, definitions of quality measures, and practical guidance for their application
38、. This division presents internal measures of software quality, external measures of software quality, quality in use measures, and data quality measures. Quality measure elements forming foundations for the quality measures are defined and presented. ISO/IEC 2503n Quality Requirements Division. The
39、 standards that form this division help specify quality requirements. These quality requirements can be used in the process of 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 pr
40、ocess for achieving necessary quality, or as inputs for an evaluation process. ISO/IEC 2504n Quality Evaluation Division. The standards that form this division provide requirements, recommendations, and guidelines for system/software product evaluation, whether performed by independent evaluators, a
41、cquirers, or developers. The support for documenting a measure as an Evaluation Module is also presented. ISO/IEC 25050 to ISO/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 re
42、servedBS ISO/IEC 25023:2016Systems and software engineering Systems and software Quality Requirements and Evaluation (SQuaRE) Measurement of system and software product quality 1 Scope This International Standard defines quality measures for quantitatively evaluating system and software product qual
43、ity in terms of characteristics and subcharacteristics defined in ISO/IEC 25010 and is intended to be used together with ISO/IEC 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
44、quality. This International Standard contains the following: a basic set of quality measures for each characteristic and subcharacteristics; an explanation of how to apply software product and system quality measures. It includes, as informative annexes, considerations for the use of quality measure
45、s (Annex A), QMEs used to define product or system quality measures (Annex B), and detailed explanation of measurement types (Annex 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 th
46、e nature of the system, product or a part of the product, and depending on factors such as category of the software, integrity level, 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, hum
47、an cognitive factors. The proposed quality measures are primarily intended to be used for quality assurance and improvement of system and software products during or post the development life cycle process. The main users of this International Standard are people carrying out quality requirement spe
48、cification and evaluation activities as part of the following: development: including requirements analysis, design specification, coding and testing through acceptance during the life cycle process; quality management: systematic examination of the software product or computer system, for example,
49、when evaluating system or software product quality as part of quality assurance, quality control and quality certification; supply: a 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 sys
