ISO IEC 25012:2008 pdfダウンロード

ISO IEC 25012:2008 pdfダウンロード。Software engineering — Software product Quality Requirements and Evaluation (SQuaRE) — Data quality model
1 Scope
This International Standard defines a general data quality model for data retained in a structured format within a computer system.
This International Standard focuses on the quality of the data as part of a computer system and defines quality characteristics for target data used by humans and systems.
Target data are those that the organization decides to analyse and validate through the model; the term nontarget data covers two cases: the first refers to data that are not persistent such as data handled by an operating system; the second refers to data that could be within the scope of the standard, but an organization chooses to not apply the standard to them.
In Figure 2 the structure of a general system is displayed in a diagram: this can include information systems which in turn can include one or more computer systems.
This International Standard can be used with other standards in the SQuaRE series to establish data quality requirements, define data quality measures, or plan and perform data quality evaluations. Data quality requirements and data quality measures can be categorized with the data quality characteristics in 5.2 and used by an evaluation process to analyse data independently from other computer system’s components.
This lnternational Standard aims to support the implementation of system’s life cycle processes, such asthose defined in ISO/IEC 15288
This International Standard takes into account all data types (e.g. character strings, texts, dates, numbers.images, sounds, etc.), assigned data values and relationships between data (e.q. consistency between data inthe same or in different entities): the scope does not include data produced by embedded devices or real timesensors that are not retained for further processing or historical purposes.
This lnternational Standard does not dictate physical organization of data (ie. data base managementsystems); moreover the activities of conceptual, logical and physical schema design are outside the scope ofthis lnternational Standard; all processes and deliverables related to such data benefit from the application ofthis International Standard.
Conformance of data to the data design is included within the scope of this lnternational Standard
The definition of metadata is addressed by lSO/EC 11179 and is outside the scope of this InternationalStandard, even if it refers to metadata to evaluate data quality.
The relationship of this lnternational Standard to industry- and domain-specific data quality standards and itsprecedence over these standards are determined by the user in a specific context of use.
2 Conformance
When this lntermational Standard is used for conformance, the user shall provide evidence that each dataquality characteristic in 5.2 has been addressed, give reasons in the event of exclusion, or describe its owncategorization of data quality attributes and provide a mapping to the characteristics in 5.2.
3Normative references
The following referenced documents are indispensable for the application of this document, For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies
ISO/EC 25000，Software engineering – Software product Quality Requirements and Evaluation(SQuaRE) – Guide to SQuaRE
4 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 25000 and the following apply