150:
3150:
814:
25:
461:"Security" is a new characteristic with subcharacteristics of "confidentiality" (data accessible only by those authorized), "integrity" (protection from unauthorized modification), "non-repudiation" (actions can be proven to have taken place), "accountability" (actions can be traced to who did them), and "authenticity" (identity can be proved to be the one claimed).
821:
158:
of "success". By clarifying, then agreeing on the project priorities and subsequently converting abstract priorities (compliance) to measurable values (output data can be validated against schema X with zero intervention), ISO/IEC 9126 tries to develop a common understanding of the project's objectives and goals.
353:
The standard provides a framework for organizations to define a quality model for a software product. On doing so, however, it leaves up to each organization the task of specifying precisely its own model. This may be done, for example, by specifying target values for quality metrics which evaluates
157:
The fundamental objective of the ISO/IEC 9126 standard is to address some of the well-known human biases that can adversely affect the delivery and perception of a software development project. These biases include changing priorities after the start of a project or not having any clear definitions
446:"Functionality" is renamed "functional suitability". "Functional completeness" is added as a subcharacteristic, and "interoperability" and "security" are moved elsewhere. "Accuracy" is renamed "functional correctness", and "suitability" is renamed "functional appropriateness".
345:
Each quality sub-characteristic (e.g. adaptability) is further divided into attributes. An attribute is an entity which can be verified or measured in the software product. Attributes are not defined in the standard, as they vary between different software products.
455:"Usability" has new subcharacteristics of "user error protection" and "accessibility" (use by people with a wide range of characteristics). "Understandability" is renamed "appropriateness recognizability", and "attractiveness" is renamed "user interface aesthetics".
349:
Software product is defined in a broad sense: it encompasses executables, source code, architecture descriptions, and so on. As a result, the notion of user extends to operators as well as to programmers, which are users of components such as software libraries.
422::2011 Systems and software engineering - Systems and software Quality Requirements and Evaluation (SQuaRE) - System and software quality models. Compared to 9126, "security" and "compatibility" were added as main characteristics.
3819:
2476:
464:"Maintainability" has new subcharacteristics of "modularity" (changes in one component have a minimal impact on others) and "reusability"; "changeability" and "stability" are rolled up into "modifiability".
473:
378:
Quality-in-use metrics are only available when the final product is used in real conditions. Ideally, the internal quality determines the external quality and external quality determines quality in use.
3689:
1988:
442:, which supersedes ISO/IEC 9126-1, was issued in March 2011. ISO 25010 has eight product quality characteristics (in contrast to ISO 9126's six), and 31 subcharacteristics.
382:
This standard stems from the GE model for describing software quality, presented in 1977 by McCall et al., which is organized around three types of quality characteristic:
3684:
1983:
194:- "A set of attributes that bear on the existence of a set of functions and their specified properties. The functions are those that satisfy stated or implied needs."
571:
ISO/IEC 25010:2011 : Systems and software engineering -- Systems and software
Quality Requirements and Evaluation (SQuaRE) -- System and software quality models
3186:
1488:
866:
278:- "A set of attributes that bear on the relationship between the level of performance of the software and the amount of resources used, under stated conditions."
582:
Scalet et al., 2000: ISO/IEC 9126 and 14598 integration aspects: A Brazilian viewpoint. The Second World
Congress on Software Quality, Yokohama, Japan, 2000.
404:
is "The nonfulfilment of specified requirements". A similar distinction is made between validation and verification, known as V&V in the testing trade.
1710:
434:(Software product Quality Requirements and Evaluation), a more extensive series of standards to replace ISO/IEC 9126, with numbers of the form ISO/IEC 250
225:- "A set of attributes that bear on the capability of software to maintain its level of performance under stated conditions for a stated period of time."
607:
472:
4043:
2785:
2705:
2496:
2491:
2337:
2503:
249:- "A set of attributes that bear on the effort needed for use, and on the individual assessment of such use, by a stated or implied set of users."
857:
3493:
3036:
1398:
3794:
3105:
2906:
2429:
1812:
1403:
1373:
541:
Systems and software engineering -- Systems and software
Quality Requirements and Evaluation (SQuaRE) -- System and software quality model
4074:
3179:
2750:
2080:
1877:
452:"Compatibility" is a new characteristic, with "co-existence" moved from "portability" and "interoperability" moved from "functionality".
1201:
2277:
1301:
773:
108:
46:
39:
2841:
2013:
1857:
3939:
3172:
2936:
2931:
2638:
718:
600:
89:
61:
3699:
3229:
2730:
2060:
1993:
1573:
1221:
738:
733:
569:
554:
3075:
2553:
850:
789:
687:
499:
68:
824:
4069:
3614:
3609:
3311:
3239:
2735:
2643:
2593:
2352:
1685:
1680:
799:
768:
504:
35:
4064:
3001:
2946:
2725:
2710:
2690:
1968:
1388:
884:
647:
593:
324:- "A set of attributes that bear on the ability of software to be transferred from one environment to another."
75:
3964:
3049:
2956:
2745:
2720:
1932:
1927:
794:
3604:
2603:
2145:
2135:
2130:
1705:
1690:
1630:
1064:
1059:
1019:
708:
57:
3153:
2921:
2911:
2040:
1458:
1039:
843:
743:
728:
723:
274:
128:
3744:
3634:
3195:
2342:
2205:
1852:
1226:
1074:
1044:
937:
927:
888:
880:
4012:
3979:
3844:
3413:
3100:
3006:
2740:
2715:
2558:
2399:
1837:
1640:
1513:
1296:
672:
662:
652:
415:
On June 15, 2001, ISO/IEC 9126:1991 was replaced by ISO/IEC 9126:2001 (four parts 9126–1 to 9126–4).
320:
3944:
2941:
2680:
3919:
3899:
2886:
2821:
1161:
514:
197:
389:
Criteria (to build): They describe the internal view of the software, as seen by the developer.
1715:
677:
392:
Metrics (to control): They are defined and used to provide a scale and method for measurement.
386:
Factors (to specify): They describe the external view of the software, as viewed by the users.
210:
539:
449:"Efficiency" is renamed "performance efficiency". "Capacity" is added as a subcharactersitic.
3569:
2449:
2190:
1518:
616:
519:
205:
184:
136:
82:
3799:
3059:
2780:
2685:
2439:
2367:
2362:
2357:
1842:
1805:
1800:
1795:
1790:
1785:
1780:
1775:
642:
637:
293:
231:
183:
The quality model presented in the first part of the standard, ISO/IEC 9126-1, classifies
297:- "A set of attributes that bear on the effort needed to make specified modifications."
2347:
2095:
1907:
1770:
1760:
1755:
1750:
1745:
1740:
1735:
1730:
1725:
1094:
1084:
682:
149:
4058:
4022:
4017:
4007:
4002:
3997:
3989:
3984:
3974:
3959:
3954:
3909:
3894:
3889:
3884:
3874:
3864:
3854:
3849:
3829:
3824:
3814:
3789:
3779:
3769:
3734:
3729:
3719:
3714:
3704:
3679:
3674:
3135:
3110:
3095:
3031:
3026:
3021:
3016:
3011:
2856:
2801:
2770:
2760:
2623:
2613:
2583:
2578:
2528:
2508:
2486:
2471:
2424:
2389:
2332:
2327:
2317:
2195:
2140:
2115:
2110:
2090:
1963:
1503:
1079:
942:
912:
362:
Internal metrics are those which do not rely on software execution (static measure).
141:
458:"Reliability" has a new subcharacteristic of "availability" (when required for use).
3969:
3949:
3669:
3644:
3624:
3619:
3599:
3594:
3589:
3584:
3579:
3574:
3564:
3559:
3554:
3254:
2996:
2966:
2826:
2170:
2165:
2028:
2023:
2018:
1937:
1882:
1765:
1720:
1695:
1625:
1620:
1615:
1610:
1605:
1563:
1528:
1438:
1433:
1261:
1069:
835:
713:
255:
221:
3544:
3336:
3306:
3299:
3294:
2971:
2668:
2663:
2658:
2242:
2159:
1131:
667:
657:
309:
260:
24:
3914:
3839:
3754:
3694:
2961:
2866:
2573:
2548:
2312:
2267:
2003:
1660:
1473:
1366:
1361:
1356:
1316:
1291:
1166:
922:
132:
4027:
3804:
3739:
3528:
3523:
3518:
3513:
3508:
3498:
3488:
3483:
3473:
3468:
3463:
3458:
3448:
3443:
3438:
3423:
3418:
3408:
3403:
3398:
3388:
3383:
3378:
3373:
3368:
3363:
3358:
3353:
3331:
3326:
3316:
3289:
3284:
3274:
3269:
3264:
3259:
3249:
3244:
3234:
3219:
3214:
3209:
3130:
3125:
3120:
3115:
3090:
3080:
3041:
2991:
2986:
2981:
2976:
2881:
2876:
2871:
2861:
2851:
2836:
2816:
2811:
2806:
2755:
2700:
2695:
2675:
2653:
2633:
2588:
2568:
2523:
2518:
2513:
2481:
2444:
2434:
2419:
2414:
2409:
2394:
2379:
2374:
2302:
2297:
2292:
2272:
2262:
2257:
2252:
2237:
2232:
2180:
2175:
2155:
2125:
2100:
2085:
2055:
2008:
1998:
1978:
1973:
1958:
1953:
1867:
1588:
1583:
1478:
1124:
1119:
1114:
1109:
1104:
1012:
1007:
1002:
997:
703:
245:
187:
in a structured set of characteristics and sub-characteristics as follows:
489:
3879:
3453:
3433:
3393:
3348:
3279:
3224:
2765:
2543:
2247:
2075:
1912:
1902:
1887:
1862:
1847:
1822:
1817:
1700:
1675:
1670:
1655:
1650:
1645:
1635:
1600:
1595:
1578:
1558:
1553:
1548:
1543:
1538:
1533:
1523:
1508:
1498:
1493:
1483:
1468:
1463:
1453:
1448:
1443:
1428:
1423:
1418:
1413:
1408:
1393:
1378:
1351:
1346:
1341:
1336:
1331:
1326:
1321:
1311:
1306:
1286:
1281:
1271:
1266:
1256:
1251:
1241:
1236:
1231:
1206:
1196:
1089:
992:
987:
982:
977:
972:
967:
962:
957:
952:
494:
3904:
3869:
3859:
3428:
3341:
3054:
2846:
2831:
2628:
2618:
2608:
2384:
2200:
2150:
2045:
2033:
1191:
1186:
1181:
1176:
1171:
1156:
1151:
1146:
1141:
1136:
1099:
1054:
1049:
1034:
1029:
1024:
3934:
3929:
3924:
3834:
3774:
3764:
3759:
3749:
3709:
3659:
2916:
2901:
2896:
2891:
2563:
2538:
2466:
2322:
2307:
2287:
2282:
2227:
2220:
2215:
2210:
2105:
2070:
1917:
1568:
1383:
947:
509:
400:
being "The nonfulfilment of intended usage requirements", whereas a
3784:
2404:
585:
396:
ISO/IEC 9126 distinguishes between a defect and a nonconformity, a
3664:
3654:
3649:
3639:
3549:
3478:
2951:
2926:
2648:
2533:
2185:
2050:
1922:
1897:
1892:
1872:
1246:
1216:
1211:
932:
917:
907:
902:
3809:
3724:
3321:
3164:
2598:
2461:
2454:
2120:
2065:
1665:
1276:
484:
3168:
839:
589:
3503:
3085:
2775:
1827:
556:
Software engineering — Product quality — Part 1: Quality model
18:
418:
On March 1, 2011, ISO/IEC 9126 was replaced by ISO/IEC
438:. For instance, ISO/IEC 25000 was issued in 2005, and
370:
External metrics are applicable to running software.
4036:
3537:
3202:
3068:
2794:
1946:
895:
782:
756:
696:
630:
623:
467:"Portability" has "co-existence" moved elsewhere.
412:ISO/IEC 9126 was issued on December 19, 1991.
354:the degree of presence of quality attributes.
3180:
851:
601:
8:
3187:
3173:
3165:
858:
844:
836:
627:
608:
594:
586:
153:The quality criteria according to ISO 9126
4044:International Electrotechnical Commission
161:The standard is divided into four parts:
109:Learn how and when to remove this message
148:
531:
125:Software engineering — Product quality
45:Please improve this article by adding
7:
820:
14:
774:List of system quality attributes
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23:
1:
430:ISO/IEC then started work on
47:secondary or tertiary sources
790:Software quality management
769:Non-functional requirements
505:Non-functional requirements
500:Verification and Validation
16:Former ISO and IEC standard
4091:
4075:ISO/IEC JTC1/SC7 standards
800:Software quality assurance
314:Maintainability compliance
139:. It has been replaced by
3144:
877:
808:
795:Software quality control
215:Functionality compliance
174:quality in use metrics.
374:Quality-in-use metrics
339:Portability compliance
239:Reliability compliance
154:
129:international standard
34:relies excessively on
287:Efficiency compliance
152:
284:Resource utilization
268:Usability compliance
757:Standards and lists
871:by standard number
515:ISO/IEC JTC 1/SC 7
155:
4070:ISO/IEC standards
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885:ISO romanizations
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752:
751:
678:Understandability
252:Understandability
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4065:Software quality
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617:Software quality
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520:Software quality
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366:External metrics
358:Internal Metrics
206:Interoperability
185:software quality
171:internal metrics
168:external metrics
137:software quality
114:
107:
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100:
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92:
51:
27:
19:
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4089:
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4032:
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3193:
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3158:
3140:
3064:
2790:
1942:
891:
873:
870:
864:
834:
829:
804:
778:
748:
692:
643:Maintainability
619:
614:
579:
578:
568:
567:
563:
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552:
548:
538:
537:
533:
528:
481:
428:
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376:
368:
360:
294:Maintainability
232:Fault tolerance
181:
115:
104:
98:
95:
52:
50:
44:
40:primary sources
28:
17:
12:
11:
5:
4088:
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4078:
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4067:
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4056:
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4025:
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4015:
4010:
4005:
4000:
3995:
3992:
3987:
3982:
3977:
3972:
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3962:
3957:
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3947:
3942:
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3932:
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3907:
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3852:
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3827:
3822:
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3812:
3807:
3802:
3797:
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3772:
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3707:
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3697:
3692:
3687:
3682:
3677:
3672:
3667:
3662:
3657:
3652:
3647:
3642:
3637:
3632:
3627:
3622:
3617:
3612:
3607:
3602:
3597:
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3587:
3582:
3577:
3572:
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3562:
3557:
3552:
3547:
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3535:
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3532:
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3521:
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3511:
3506:
3501:
3496:
3491:
3486:
3481:
3476:
3471:
3466:
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3456:
3451:
3446:
3441:
3436:
3431:
3426:
3421:
3416:
3411:
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3401:
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3391:
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3346:
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3344:
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3329:
3324:
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3314:
3309:
3304:
3303:
3302:
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3287:
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3277:
3272:
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3262:
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3252:
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3232:
3227:
3222:
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3206:
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3200:
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3177:
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3159:
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3141:
3139:
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3133:
3128:
3123:
3118:
3113:
3108:
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3098:
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3034:
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3019:
3014:
3009:
3004:
2999:
2994:
2989:
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2979:
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2969:
2964:
2959:
2954:
2949:
2944:
2939:
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2914:
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2874:
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2789:
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2753:
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2743:
2738:
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2728:
2723:
2718:
2713:
2708:
2703:
2698:
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2688:
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2673:
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2671:
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2641:
2636:
2631:
2626:
2621:
2616:
2611:
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2601:
2596:
2591:
2586:
2581:
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2556:
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2546:
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2531:
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2521:
2516:
2511:
2506:
2501:
2500:
2499:
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2484:
2479:
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2459:
2458:
2457:
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2442:
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2432:
2427:
2422:
2417:
2412:
2407:
2402:
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2387:
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2377:
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2315:
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2300:
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2270:
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2260:
2255:
2250:
2245:
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2235:
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2218:
2208:
2203:
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2193:
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2183:
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2173:
2168:
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2153:
2148:
2143:
2138:
2133:
2128:
2123:
2118:
2113:
2108:
2103:
2098:
2093:
2088:
2083:
2078:
2073:
2068:
2063:
2058:
2053:
2048:
2043:
2038:
2037:
2036:
2031:
2026:
2021:
2016:
2006:
2001:
1996:
1991:
1986:
1981:
1976:
1971:
1966:
1961:
1956:
1950:
1948:
1944:
1943:
1941:
1940:
1935:
1930:
1925:
1920:
1915:
1910:
1905:
1900:
1895:
1890:
1885:
1880:
1875:
1870:
1865:
1860:
1855:
1850:
1845:
1840:
1835:
1830:
1825:
1820:
1815:
1810:
1809:
1808:
1803:
1798:
1793:
1788:
1783:
1778:
1773:
1768:
1763:
1758:
1753:
1748:
1743:
1738:
1733:
1728:
1718:
1713:
1708:
1703:
1698:
1693:
1688:
1683:
1678:
1673:
1668:
1663:
1658:
1653:
1648:
1643:
1638:
1633:
1628:
1623:
1618:
1613:
1608:
1603:
1598:
1593:
1592:
1591:
1581:
1576:
1571:
1566:
1561:
1556:
1551:
1546:
1541:
1536:
1531:
1526:
1521:
1516:
1511:
1506:
1501:
1496:
1491:
1486:
1481:
1476:
1471:
1466:
1461:
1456:
1451:
1446:
1441:
1436:
1431:
1426:
1421:
1416:
1411:
1406:
1401:
1396:
1391:
1386:
1381:
1376:
1371:
1370:
1369:
1364:
1359:
1349:
1344:
1339:
1334:
1329:
1324:
1319:
1314:
1309:
1304:
1299:
1294:
1289:
1284:
1279:
1274:
1269:
1264:
1259:
1254:
1249:
1244:
1239:
1234:
1229:
1224:
1219:
1214:
1209:
1204:
1199:
1194:
1189:
1184:
1179:
1174:
1169:
1164:
1159:
1154:
1149:
1144:
1139:
1134:
1129:
1128:
1127:
1122:
1117:
1112:
1107:
1097:
1092:
1087:
1082:
1077:
1072:
1067:
1062:
1057:
1052:
1047:
1042:
1037:
1032:
1027:
1022:
1017:
1016:
1015:
1010:
1005:
1000:
995:
990:
985:
980:
975:
970:
965:
960:
955:
945:
940:
935:
930:
925:
920:
915:
910:
905:
899:
897:
893:
892:
878:
875:
874:
865:
863:
862:
855:
848:
840:
831:
830:
828:
827:
817:
809:
806:
805:
803:
802:
797:
792:
786:
784:
780:
779:
777:
776:
771:
766:
760:
758:
754:
753:
750:
749:
747:
746:
741:
736:
731:
726:
721:
716:
711:
706:
700:
698:
694:
693:
691:
690:
685:
683:Loose coupling
680:
675:
670:
665:
660:
655:
650:
645:
640:
634:
632:
625:
621:
620:
615:
613:
612:
605:
598:
590:
584:
583:
577:
576:
561:
546:
530:
529:
527:
524:
523:
522:
517:
512:
507:
502:
497:
492:
487:
480:
477:
469:
468:
465:
462:
459:
456:
453:
450:
447:
427:
424:
409:
406:
394:
393:
390:
387:
375:
372:
367:
364:
359:
356:
343:
342:
341:
340:
337:
336:Replaceability
334:
331:
330:Installability
328:
317:
316:
315:
312:
307:
304:
301:
290:
289:
288:
285:
282:
281:Time behaviour
271:
270:
269:
266:
265:Attractiveness
263:
258:
253:
242:
241:
240:
237:
236:Recoverability
234:
229:
218:
217:
216:
213:
208:
203:
200:
180:
177:
176:
175:
172:
169:
166:
117:
116:
58:"ISO/IEC 9126"
31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
4087:
4076:
4073:
4071:
4068:
4066:
4063:
4062:
4060:
4045:
4042:
4041:
4039:
4035:
4029:
4026:
4024:
4021:
4019:
4016:
4014:
4011:
4009:
4006:
4004:
4001:
3999:
3996:
3993:
3991:
3988:
3986:
3983:
3981:
3978:
3976:
3973:
3971:
3968:
3966:
3963:
3961:
3958:
3956:
3953:
3951:
3948:
3946:
3943:
3941:
3938:
3936:
3933:
3931:
3928:
3926:
3923:
3921:
3918:
3916:
3913:
3911:
3908:
3906:
3903:
3901:
3898:
3896:
3893:
3891:
3888:
3886:
3883:
3881:
3878:
3876:
3873:
3871:
3868:
3866:
3863:
3861:
3858:
3856:
3853:
3851:
3848:
3846:
3843:
3841:
3838:
3836:
3833:
3831:
3828:
3826:
3823:
3821:
3818:
3816:
3813:
3811:
3808:
3806:
3803:
3801:
3798:
3796:
3793:
3791:
3788:
3786:
3783:
3781:
3778:
3776:
3773:
3771:
3768:
3766:
3763:
3761:
3758:
3756:
3753:
3751:
3748:
3746:
3743:
3741:
3738:
3736:
3733:
3731:
3728:
3726:
3723:
3721:
3718:
3716:
3713:
3711:
3708:
3706:
3703:
3701:
3698:
3696:
3693:
3691:
3688:
3686:
3683:
3681:
3678:
3676:
3673:
3671:
3668:
3666:
3663:
3661:
3658:
3656:
3653:
3651:
3648:
3646:
3643:
3641:
3638:
3636:
3633:
3631:
3628:
3626:
3623:
3621:
3618:
3616:
3613:
3611:
3608:
3606:
3603:
3601:
3598:
3596:
3593:
3591:
3588:
3586:
3583:
3581:
3578:
3576:
3573:
3571:
3568:
3566:
3563:
3561:
3558:
3556:
3553:
3551:
3548:
3546:
3543:
3542:
3540:
3536:
3530:
3527:
3525:
3522:
3520:
3517:
3515:
3512:
3510:
3507:
3505:
3502:
3500:
3497:
3495:
3492:
3490:
3487:
3485:
3482:
3480:
3477:
3475:
3472:
3470:
3467:
3465:
3462:
3460:
3457:
3455:
3452:
3450:
3447:
3445:
3442:
3440:
3437:
3435:
3432:
3430:
3427:
3425:
3422:
3420:
3417:
3415:
3412:
3410:
3407:
3405:
3402:
3400:
3397:
3395:
3392:
3390:
3387:
3385:
3382:
3380:
3377:
3375:
3372:
3370:
3367:
3365:
3362:
3360:
3357:
3355:
3352:
3350:
3347:
3343:
3340:
3338:
3335:
3334:
3333:
3330:
3328:
3325:
3323:
3320:
3318:
3315:
3313:
3310:
3308:
3305:
3301:
3298:
3296:
3293:
3292:
3291:
3288:
3286:
3283:
3281:
3278:
3276:
3273:
3271:
3268:
3266:
3263:
3261:
3258:
3256:
3253:
3251:
3248:
3246:
3243:
3241:
3238:
3236:
3233:
3231:
3228:
3226:
3223:
3221:
3218:
3216:
3213:
3211:
3208:
3207:
3205:
3201:
3197:
3196:IEC standards
3190:
3185:
3183:
3178:
3176:
3171:
3170:
3167:
3155:
3147:
3146:
3143:
3137:
3134:
3132:
3129:
3127:
3124:
3122:
3119:
3117:
3114:
3112:
3109:
3107:
3104:
3102:
3099:
3097:
3094:
3092:
3089:
3087:
3084:
3082:
3079:
3077:
3074:
3073:
3071:
3067:
3061:
3058:
3056:
3053:
3051:
3048:
3045:
3043:
3040:
3038:
3035:
3033:
3030:
3028:
3025:
3023:
3020:
3018:
3015:
3013:
3010:
3008:
3005:
3003:
3000:
2998:
2995:
2993:
2990:
2988:
2985:
2983:
2980:
2978:
2975:
2973:
2970:
2968:
2965:
2963:
2960:
2958:
2955:
2953:
2950:
2948:
2945:
2943:
2940:
2938:
2935:
2933:
2930:
2928:
2925:
2923:
2920:
2918:
2915:
2913:
2910:
2908:
2905:
2903:
2900:
2898:
2895:
2893:
2890:
2888:
2885:
2883:
2880:
2878:
2875:
2873:
2870:
2868:
2865:
2863:
2860:
2858:
2855:
2853:
2850:
2848:
2845:
2843:
2840:
2838:
2835:
2833:
2830:
2828:
2825:
2823:
2820:
2818:
2815:
2813:
2810:
2808:
2805:
2803:
2800:
2799:
2797:
2793:
2787:
2784:
2782:
2779:
2777:
2774:
2772:
2769:
2767:
2764:
2762:
2759:
2757:
2754:
2752:
2749:
2747:
2744:
2742:
2739:
2737:
2734:
2732:
2729:
2727:
2724:
2722:
2719:
2717:
2714:
2712:
2709:
2707:
2704:
2702:
2699:
2697:
2694:
2692:
2689:
2687:
2684:
2682:
2679:
2677:
2674:
2670:
2667:
2665:
2662:
2661:
2660:
2657:
2655:
2652:
2650:
2647:
2645:
2642:
2640:
2637:
2635:
2632:
2630:
2627:
2625:
2622:
2620:
2617:
2615:
2612:
2610:
2607:
2605:
2602:
2600:
2597:
2595:
2592:
2590:
2587:
2585:
2582:
2580:
2577:
2575:
2572:
2570:
2567:
2565:
2562:
2560:
2557:
2555:
2552:
2550:
2547:
2545:
2542:
2540:
2537:
2535:
2532:
2530:
2527:
2525:
2522:
2520:
2517:
2515:
2512:
2510:
2507:
2505:
2502:
2498:
2495:
2494:
2493:
2490:
2488:
2485:
2483:
2480:
2478:
2475:
2473:
2470:
2468:
2465:
2463:
2460:
2456:
2453:
2451:
2448:
2447:
2446:
2443:
2441:
2438:
2436:
2433:
2431:
2428:
2426:
2423:
2421:
2418:
2416:
2413:
2411:
2408:
2406:
2403:
2401:
2398:
2396:
2393:
2391:
2388:
2386:
2383:
2381:
2378:
2376:
2373:
2369:
2366:
2364:
2361:
2359:
2356:
2354:
2351:
2349:
2346:
2344:
2341:
2339:
2336:
2334:
2331:
2329:
2326:
2325:
2324:
2321:
2319:
2316:
2314:
2311:
2309:
2306:
2304:
2301:
2299:
2296:
2294:
2291:
2289:
2286:
2284:
2281:
2279:
2276:
2274:
2271:
2269:
2266:
2264:
2261:
2259:
2256:
2254:
2251:
2249:
2246:
2244:
2241:
2239:
2236:
2234:
2231:
2229:
2226:
2222:
2219:
2217:
2214:
2213:
2212:
2209:
2207:
2204:
2202:
2199:
2197:
2194:
2192:
2189:
2187:
2184:
2182:
2179:
2177:
2174:
2172:
2169:
2167:
2164:
2161:
2157:
2154:
2152:
2149:
2147:
2144:
2142:
2139:
2137:
2134:
2132:
2129:
2127:
2124:
2122:
2119:
2117:
2114:
2112:
2109:
2107:
2104:
2102:
2099:
2097:
2094:
2092:
2089:
2087:
2084:
2082:
2079:
2077:
2074:
2072:
2069:
2067:
2064:
2062:
2059:
2057:
2054:
2052:
2049:
2047:
2044:
2042:
2039:
2035:
2032:
2030:
2027:
2025:
2022:
2020:
2017:
2015:
2012:
2011:
2010:
2007:
2005:
2002:
2000:
1997:
1995:
1992:
1990:
1987:
1985:
1982:
1980:
1977:
1975:
1972:
1970:
1967:
1965:
1962:
1960:
1957:
1955:
1952:
1951:
1949:
1945:
1939:
1936:
1934:
1931:
1929:
1926:
1924:
1921:
1919:
1916:
1914:
1911:
1909:
1906:
1904:
1901:
1899:
1896:
1894:
1891:
1889:
1886:
1884:
1881:
1879:
1876:
1874:
1871:
1869:
1866:
1864:
1861:
1859:
1856:
1854:
1851:
1849:
1846:
1844:
1841:
1839:
1836:
1834:
1831:
1829:
1826:
1824:
1821:
1819:
1816:
1814:
1811:
1807:
1804:
1802:
1799:
1797:
1794:
1792:
1789:
1787:
1784:
1782:
1779:
1777:
1774:
1772:
1769:
1767:
1764:
1762:
1759:
1757:
1754:
1752:
1749:
1747:
1744:
1742:
1739:
1737:
1734:
1732:
1729:
1727:
1724:
1723:
1722:
1719:
1717:
1714:
1712:
1709:
1707:
1704:
1702:
1699:
1697:
1694:
1692:
1689:
1687:
1684:
1682:
1679:
1677:
1674:
1672:
1669:
1667:
1664:
1662:
1659:
1657:
1654:
1652:
1649:
1647:
1644:
1642:
1639:
1637:
1634:
1632:
1629:
1627:
1624:
1622:
1619:
1617:
1614:
1612:
1609:
1607:
1604:
1602:
1599:
1597:
1594:
1590:
1587:
1586:
1585:
1582:
1580:
1577:
1575:
1572:
1570:
1567:
1565:
1562:
1560:
1557:
1555:
1552:
1550:
1547:
1545:
1542:
1540:
1537:
1535:
1532:
1530:
1527:
1525:
1522:
1520:
1517:
1515:
1512:
1510:
1507:
1505:
1502:
1500:
1497:
1495:
1492:
1490:
1487:
1485:
1482:
1480:
1477:
1475:
1472:
1470:
1467:
1465:
1462:
1460:
1457:
1455:
1452:
1450:
1447:
1445:
1442:
1440:
1437:
1435:
1432:
1430:
1427:
1425:
1422:
1420:
1417:
1415:
1412:
1410:
1407:
1405:
1402:
1400:
1397:
1395:
1392:
1390:
1387:
1385:
1382:
1380:
1377:
1375:
1372:
1368:
1365:
1363:
1360:
1358:
1355:
1354:
1353:
1350:
1348:
1345:
1343:
1340:
1338:
1335:
1333:
1330:
1328:
1325:
1323:
1320:
1318:
1315:
1313:
1310:
1308:
1305:
1303:
1300:
1298:
1295:
1293:
1290:
1288:
1285:
1283:
1280:
1278:
1275:
1273:
1270:
1268:
1265:
1263:
1260:
1258:
1255:
1253:
1250:
1248:
1245:
1243:
1240:
1238:
1235:
1233:
1230:
1228:
1225:
1223:
1220:
1218:
1215:
1213:
1210:
1208:
1205:
1203:
1200:
1198:
1195:
1193:
1190:
1188:
1185:
1183:
1180:
1178:
1175:
1173:
1170:
1168:
1165:
1163:
1160:
1158:
1155:
1153:
1150:
1148:
1145:
1143:
1140:
1138:
1135:
1133:
1130:
1126:
1123:
1121:
1118:
1116:
1113:
1111:
1108:
1106:
1103:
1102:
1101:
1098:
1096:
1093:
1091:
1088:
1086:
1083:
1081:
1078:
1076:
1073:
1071:
1068:
1066:
1063:
1061:
1058:
1056:
1053:
1051:
1048:
1046:
1043:
1041:
1038:
1036:
1033:
1031:
1028:
1026:
1023:
1021:
1018:
1014:
1011:
1009:
1006:
1004:
1001:
999:
996:
994:
991:
989:
986:
984:
981:
979:
976:
974:
971:
969:
966:
964:
961:
959:
956:
954:
951:
950:
949:
946:
944:
941:
939:
936:
934:
931:
929:
926:
924:
921:
919:
916:
914:
911:
909:
906:
904:
901:
900:
898:
894:
890:
889:IEC standards
886:
882:
881:ISO standards
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714:Adaptability
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2795:20000–29999
1947:10000–19999
719:Correctness
709:Reliability
673:Testability
668:Scalability
663:Readability
658:Reusability
653:Portability
648:Flexibility
321:Portability
310:Testability
261:Operability
222:Reliability
198:Suitability
99:August 2020
4059:Categories
2574:16949 (TS)
2171:11941 (TR)
869:standards
734:Robustness
729:Efficiency
526:References
275:Efficiency
133:evaluation
69:newspapers
36:references
2529:15926 WIP
1893:9592/9593
1818:9000/9001
1706:8805/8806
783:Processes
704:Usability
624:Qualities
306:Stability
246:Usability
3154:Category
879:List of
739:Security
724:Accuracy
697:External
631:Internal
495:ISO 9000
479:See also
228:Maturity
211:Security
202:Accuracy
131:for the
4037:Related
3750:13522-5
3538:ISO/IEC
3429:62014-4
3342:61131-9
3337:61131-3
3307:60906-1
3300:60870-6
3295:60870-5
3055:29199-2
2927:23094-2
2922:23094-1
2912:23090-3
2781:19794-5
2776:19775-1
2564:16612-2
2554:16355-1
2243:13406-2
2201:12234-2
1969:10118-3
825:Commons
408:History
179:Quality
127:was an
83:scholar
3069:30000+
1908:9797-1
1716:8820-5
1661:8501-1
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510:Squale
432:SQuaRE
398:defect
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1994:10206
1989:10179
1984:10165
1979:10161
1974:10160
1964:10116
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144::2011
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