ISO IEC 9126-3 PDF
International Technical Report ISO/IEC was prepared by the Joint Technical Committee ISO/IEC JTC1, Information Technology, Subcommittee SC7 . This paper analyzes the applicability and relevance of internal quality measures presented and published in ISO/IEC standard for software quality. ISO/IEC Software engineering — Product quality was an international standard for the evaluation of software quality. It has been replaced by ISO/IEC.
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Information technology – Software Product Ied – Quality characteristics and guidelines for their use – 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.
The objective of this standard is to provide a framework for the evaluation of software quality. Each quality sub-characteristic e. Views Read Edit View history. This page was last edited on 12 September912-63 This part provides internal metrics for measuring software quality characteristics.
Attributes of software that bear on the effort needed to install the software in a specified environment. Information technology – Software quality characteristics and metrics – Part 3: The standard provides a framework for organizations to define a quality model for a software product.
Internal metrics are applicable to a non executable software product during designing and coding in early stage of development process.
The current standard is under review. They have been reworded and several new ones added.
There is also a definition of quality in use which defines the user’s view as a result of using the software. Attributes of software that bear on its ability to prevent unauthorized access, whether accidental or deliberate, to programs or data. Attributes of software that bear on the io needed for modification, fault removal or for environmental change.
This may be done, for example, by specifying target values for quality metrics which evaluates the degree of presence of quality attributes.
Attributes of software that bear on its ability to maintain ic specified level of performance in case of software faults or of infringement of its specified interface.
ISO/IEC – Wikipedia
Use British English Oxford spelling from January Attributes are not defined in the standard, as they vary between different software products. Attributes of software that make the software adhere to application related standards or conventions or regulations in laws and similar prescriptions.
Quality characteristics and subcharacteristics. This part provides the concepts introduced in the original standard ie a recommended quality model which categorizes software quality in six characteristics, which are further sub-divided into subcharacteristics.
ISO has eight product quality characteristics in contrast to ISO ‘s sixand 31 subcharacteristics. Attributes of software that bear on opportunity and effort using it in the place of specified other software in the environment of that software.
This standard stems from the GE model for describing software quality, presented in by McCall et al. Information technology – Software quality characteristics and metrics – Part 2: External metrics are applicable to an executable software product during testing or operating in later stage of development and after entering to operation process.
These biases include changing priorities after the start of a project or not having any clear definitions of “success”.
ISO/IEC TR – Software engineering — Product quality — Part 3: Internal metrics
Information technology – Software quality characteristics and metrics – Part 1: As a result, the notion of oec extends to operators as well as to programmers, which are users of components such as software libraries. Attributes of software that bear on response and processing times and on throughput rates in performances its function. Attributes of software that make the software adhere to standards or conventions relating to portability.
Attributes of software that bear on the amount of resource used and the duration of such use in performing its function. List of International Electrotechnical Commission standards.
Attributes of software that bear on the presence and appropriateness of a set of functions for specified tasks. The subcharacteristics have been moved from the annex to become part of the standard. An attribute is an entity which can be verified or measured in the software product. Attributes of software that bear on the opportunity for its adaptation to different specified environments without applying other actions or means than those provided for this purpose for the software considered. An internal metric is a quantitative scale and measurement method, which can be used for measuring an attribute or characteristic of a software product, derived from the product itself, either direct or indirect it is not derived from measures of the behaviour of the system.
Attributes of software that bear on the capability to re-establish its level of performance and recover the data directly affected in case of a failure and on the time and effort needed for it. It defines six product quality characteristics and in an annex provides a suggestion of quality subcharacteristics.
This part provides external metrics for measuring software quality characteristics.
Attributes of software 9126- bear on the effort needed for diagnosis of deficiencies or causes of failures, or for identification of parts to be modified. Compared to”security” and “compatibility” were added as main characteristics. On doing so, however, it leaves up to each organization the task of specifying precisely its own model. An external metric is a quantitative scale and measurement method, which can be used for measuring an attribute or characteristic of a software product, derived from the behaviour of the system of which it is a part.
ISO 9126: The Standard of Reference
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