ISO 9126-2 PDF

ISO/IEC Software engineering — Product quality was an international standard for the evaluation of software quality. It has been replaced by ISO/IEC. ISO/IEC TR (E) ISO/IEC Software engineering – Product quality – Part 2: External metrics Contents Download Table | Examples of the use of base measures in ISO from publication: An Information Model for Software Quality Measurement with ISO.

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Attributes of software that bear on its ability to maintain a specified level of performance in case of software faults or of infringement of its specified interface.

ISO/IEC – Wikipedia

Information ido – Software quality characteristics and metrics – Part 1: Compared to”security” and “compatibility” were added as main characteristics. ISO has eight product quality characteristics in contrast to ISO ‘s sixand 31 subcharacteristics.

Retrieved from ” https: Attributes of software that bear on the ios needed for diagnosis of deficiencies or causes of failures, or for identification of parts to be modified. There is also a definition of quality in use which defines the user’s view as a result of using the software.

ESSI-SCOPE Quality Characteristics and their application

On doing so, however, it leaves up to kso organization the task of specifying precisely its own model. Attributes of software that bear on opportunity and effort using it in the place of specified other software in the environment of that software. Attributes of software that bear on the presence and appropriateness of a set of functions for specified tasks.

Information technology – Software quality characteristics and metrics – Part 3: 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. List of International Electrotechnical Commission standards.

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Attributes of software that bear on the effort needed to install the software in a specified environment. ISO standards by standard number. Internal metrics are applicable to a non executable software product during designing and coding in early stage of development process. Information technology – Software Product Evaluation – Quality characteristics and guidelines for their use – Quality characteristics and subcharacteristics. Use British English Oxford spelling from January Attributes of software that bear on response and processing times and on throughput rates in performances its function.

This may be done, for example, by specifying target values for quality metrics which evaluates the degree of presence of quality attributes. This page was last edited on 12 Septemberat Attributes of software that bear on its ability to prevent unauthorized access, whether accidental or deliberate, to programs or data.

ISO 9126: The Standard of Reference

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. The subcharacteristics have been moved from the annex to become part of the standard.

This standard stems from the GE model for describing software quality, presented in by McCall et al.

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 9216-2 part. The current standard is under review. Attributes of software that bear on the effort needed for modification, fault removal or for environmental change. Ideally, the internal quality determines the external quality and external quality determines quality in use.

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Information technology – Software quality characteristics and metrics – Part 2: Quality-in-use metrics are only available when the final product is used in real conditions. From Wikipedia, the free encyclopedia. Each quality sub-characteristic e. This part provides internal metrics for measuring software quality characteristics. The standard provides a framework for organizations to define a quality model for a 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.

ISO/IEC 9126

These biases include 99126-2 priorities after the start of a project 9126-22 not having any clear definitions of “success”. As a result, the notion of user extends to operators as well as to programmers, which are users of components such as software libraries. Attributes of software that make the software adhere to application related standards or conventions or regulations in laws and similar prescriptions.

This part provides external metrics for measuring software quality characteristics.

By using this site, you agree to the Terms of Use and Privacy Policy. It defines six product quality characteristics and in an annex provides a suggestion of quality subcharacteristics. An attribute is an entity which can be verified or measured in the software product.

Views Read Edit View history. Attributes are not defined oso the standard, as they vary between different software products. Software product is defined in a broad sense: