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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 It has been replaced by ISO/IEC.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 response and processing times and on throughput rates in performances its function.

Information technology – Software quality characteristics and metrics – Part 3: 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 make the software adhere to application related standards or conventions or regulations in laws and similar prescriptions. Software product is defined in a broad sense: Attributes of software that bear on its ability to prevent unauthorized access, whether accidental or deliberate, to programs or data.

Is British English Oxford spelling from January As a result, the notion of user extends to operators as well as to programmers, isp are users of components such as software libraries. Information technology – Software quality characteristics and metrics – Part 1: Attributes of software that bear on opportunity sio effort using it in the place of specified other software in the environment of that software.

Views Read Edit View history. Attributes of software that make the software adhere to standards or conventions relating to portability. Attributes of software that bear on the effort needed for diagnosis of deficiencies or causes of failures, or for identification of parts to be modified.

ISO/IEC TR – Software engineering — Product quality — Part 2: External metrics

Retrieved from ” https: The standard provides a framework for organizations to define a quality model for a software product. The current standard is under review. ISO standards by standard number. These biases include changing priorities after the start of a project or not having any clear definitions of “success”. 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.

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Io of software that bear on the effort needed to install the software in a specified environment.

ISO 9126: The Standard of Reference

This part provides internal metrics for measuring software quality characteristics. Attributes of software that bear on the amount of resource used and the duration of such use in performing its function. An external metric is a quantitative scale and measurement method, which io 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.

External metrics are applicable to an executable software product during testing or operating in later stage of development and after entering to operation process. Attributes of software that bear on the effort needed for modification, fault removal or for environmental change.

An attribute is an entity 9162-2 can 91226-2 verified or measured in the software product. This page was last edited on 12 Septemberat The subcharacteristics have been moved from the annex to become part of the standard.

ISO has eight product quality characteristics in contrast to ISO ‘s sixand 31 subcharacteristics. Quality characteristics and subcharacteristics.

Attributes of software that bear on the presence and appropriateness of a set of functions for specified tasks. Internal metrics are applicable 1926-2 a non executable software product during designing and coding in early stage of development process. 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: The objective of this standard is to provide a framework for the evaluation of software quality.

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Ideally, the internal quality determines the external quality and external quality determines quality in use.

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.

It defines six product quality characteristics 9162-2 in an annex provides a suggestion of quality subcharacteristics. Each quality sub-characteristic e. Information technology – Software Product Evaluation – Quality characteristics and guidelines for their use – 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.

List of International Electrotechnical Commission standards. Quality-in-use metrics are only available when the final product is used in real conditions. From Wikipedia, the free encyclopedia.

ISO/IEC 9126

Compared to”security” and “compatibility” were added as main characteristics. Attributes of software izo 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.

This part provides external metrics for measuring software quality characteristics. Attributes are not defined in the standard, as they vary between different software products.

They have been reworded and several new ones added. By using this site, you agree to the Terms of Use and Privacy Policy.