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 It has been replaced by ISO/IEC.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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ISO/IEC TR – Software engineering — Product quality — Part 2: External metrics
Attributes of software that bear on the opportunity for is adaptation to different specified environments without applying other actions or means than those provided for this purpose for the software considered. Attributes of software that make the software adhere to application related standards or conventions or regulations in laws and similar prescriptions.
On doing so, however, it leaves up to each organization the task of specifying precisely its own model. Attributes of software that bear on the capability to re-establish its level of performance and recover the data directly affected in case of 91262 failure and on the time and effort needed for it.
ISO has isp product quality characteristics in contrast to ISO ‘s sixand 31 subcharacteristics. Software product is defined in a broad sense: There is also a definition of quality in use which defines the user’s view as a result of using the software.
Views Read Edit View history. An internal metric is a quantitative scale and measurement method, which can ido 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 presence 9126-22 appropriateness of a set of functions for specified tasks. List of International Electrotechnical Commission standards. 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
Information technology – Software quality characteristics and metrics – Part 1: Attributes of software that bear on opportunity and effort using it in the place of specified other software in the environment of that software. Each quality sub-characteristic e. Attributes are not defined in the standard, as they vary between different software products. An external metric is a quantitative scale and measurement method, which can be used for measuring an attribute or characteristic of a software product, 9162-2 from the behaviour of the system of which it is a part.
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. As a result, the notion of user extends to operators as well as to programmers, which are users of components such as software libraries.
Information technology – Software quality characteristics and metrics – Part 3: This part provides external metrics for measuring software quality characteristics. Information technology – Software Product Evaluation – Quality characteristics and guidelines for their use – An attribute is an entity which can be verified or measured in the software product. Retrieved from ” https: The standard provides a framework for organizations to define a quality model for a software product.
This standard stems from the GE model for describing software quality, presented in by McCall et al. They have been reworded and several new ones added.
Attributes of software that bear on the effort needed for modification, fault removal or for environmental change. Information technology – Software quality characteristics and metrics – Part 2: It defines six product quality characteristics and in an annex provides a suggestion of quality subcharacteristics.
ESSI-SCOPE Quality Characteristics and their application
Use British English Oxford spelling from January 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.
Quality characteristics and subcharacteristics. The objective of this standard is to provide a framework for the evaluation of software quality. Quality-in-use metrics are only available when the final product is used in real conditions. Attributes of software that make the software adhere to standards or conventions relating to portability.
This may be done, for example, by specifying target values for quality metrics which evaluates the degree of presence 91126-2 quality attributes. External metrics are applicable to an executable software product during testing or operating in later stage of isp and after entering to operation process.
Compared to”security” and “compatibility” were added as main characteristics. This part provides the concepts introduced in the original standard ie a recommended quality model which categorizes software quality in iiso characteristics, which are further sub-divided into subcharacteristics. 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. These biases include changing priorities after the start of a project or not having any clear definitions of “success”.
Internal metrics are applicable to a non executable software product during designing and coding in early stage of development process. ISO standards by standard 91262.
This page was last edited on 12 Septemberat The subcharacteristics have been moved from the annex to become part of the standard. Ideally, the internal quality determines the external quality and external quality determines quality in use.