Concept help - Data Type
A datatype is a set of distinct values, characterized by properties of those values and by operations on those values (ISO/IEC 11404).
Primative datatypes are those "that cannot be decomposed into other datatypes without loss of associated semantics "
ISO/IEC 11179-3 Section 11.3.2.9Datatype is a class, each instance of which models a datatype (3.1.9), a set of distinct values, characterized by properties of those values and by operations on those values. For example, the category used for the collection of letters, digits, and/or symbols to depict values of a Data_Element (11.5.2.1) determined by the operations that may be performed on the Data_Element.
This part of ISO/IEC 11179 is intended to accommodate datatypes from datatype schemes specified in external standards. It is also intended to accommodate other non-standard datatype schemes. Possible standardized datatype schemes include:
- ISO/IEC 9075 (SQL dataype);
- ISO/IEC 11404 (General Purpose Datatypes);
- ISO 21090 Health Informatics datatypes;
- C programming language datatypes;
- XML Schema datatypes;
Fields available on this metadata type
Field | ISO definition |
---|---|
Name | The primary name used for human identification purposes. |
Definition | Representation of a concept by a descriptive statement which serves to differentiate it from related concepts. (3.2.39) |
Is Federated | |
Is Not Federable | |
Version | Unique version identifier of this metadata item. |
References | Significant documents that contributed to the development of the metadata item which were not the direct source for the metadata content. |
Origin | The source (e.g. document, project, discipline or model) for the item (8.1.2.2.3.5) |
Comments | Descriptive comments about the metadata item (8.1.2.2.3.4) |
Deleted | The date after which the item has been soft deleted and is no longer visible in the registry |
Official Definition
A set of distinct values, characterized by properties of those values and by operations on those values ISO/IEC 11179 - Clause 3.1.8