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 It has been replaced by ISO/IEC.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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List of International Electrotechnical Commission standards. These biases include changing priorities after the start of a project or not having any clear definitions of “success”. This part provides the concepts introduced in the original standard ie a recommended 1926-2 model which categorizes software quality in six characteristics, which are further sub-divided into subcharacteristics.
This standard stems from the GE model for describing software quality, presented in by McCall et al. On doing so, however, it leaves up to each organization the task of specifying precisely its own model. They have been reworded and several new ones added.
Attributes of software that bear on its ability to prevent unauthorized access, whether accidental or deliberate, to programs or data.
ESSI-SCOPE Quality Characteristics and their application
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.
Attributes of software that bear on the effort needed to install the software in a specified environment. The current standard is under review.
An internal metric is a quantitative scale and measurement method, which can be used for ixo 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.
There is also a definition of quality in use which defines the user’s view as a result of using the isso. 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 9126–2 is a part.
Attributes of software that bear on response and processing times and on throughput rates in performances its function. It defines six product quality characteristics and in an annex provides a suggestion of quality subcharacteristics.
The objective of this standard is to provide a framework for the evaluation of software quality. This ixo was last edited on 12 Septemberat 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.
Compared to”security” and “compatibility” were added 91262- main characteristics. Attributes are not defined in the standard, as they vary between different software ios. ISO has eight product quality characteristics in contrast to ISO ‘s sixand 31 subcharacteristics. As a result, the notion of user extends to operators as well as to programmers, which are users of components such as software libraries. Software product is defined in a broad sense: The standard provides a framework for organizations to define a quality model for a software product.
Attributes of software that bear on its ability to maintain a specified level 99126-2 performance in case of software faults or of infringement of its specified interface.
ISO 9126: The Standard of Reference
This part provides internal metrics for measuring software quality characteristics. Information technology – Software Product Evaluation – Quality characteristics and guidelines for their use – Quality-in-use metrics are only available when the final product is used in real conditions. Quality characteristics and subcharacteristics.
Attributes of software that bear on the capability to re-establish its level of performance and recover the data directly affected in case of 1926-2 failure and on the time and effort needed for it. Use British English Oxford spelling from January ISO standards by standard number.
Each quality sub-characteristic e. Attributes of software that bear on the effort needed for modification, fault removal or for environmental change. External metrics are applicable to an executable software product during testing or operating in later stage of development and after entering to operation process.
Ideally, the internal quality determines the external quality and external quality determines quality in use. An attribute is an entity which can be verified or measured in the software product. Information technology – Software quality characteristics and metrics – Part 2: Attributes of software that make the software adhere to application related standards or conventions or regulations in laws and similar prescriptions.
Attributes of software that bear on the presence and appropriateness of a set of functions for specified tasks. 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.
Attributes of software that bear on the amount of resource used and the duration of such use in performing its function.
Retrieved from ” https: Attributes of software that make the software adhere to standards or conventions relating to portability. Views Read Edit View history. From Wikipedia, the free encyclopedia.
ISO/IEC TR – Software engineering — Product quality — Part 2: External metrics
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.