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The next two sections provide the detailed specifications of the release files:
3. 4 Component Release Files Specification
Files that represent the main SNOMED CT components:
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- Subsets of concepts and descriptions
- Maps to other code systems
- Language and dialect preferences for different terms
- Annotation of components
- Associations between components
- Other forms of configuration and extensibility
The DOCTSG is a Additional information is provided in the DOCTSG, a separate document that includes guidance on Representing Terminology Data and Importing SNOMED CT Release Files.
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| title | Historical Note on Current and Previous Release File Formats |
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The standard format in which has been distributed since 2012 is known as (RF2). It was developed in response to extensive feedback on the original release file format, now known as (RF1), in which was distributed between its first release in 2002 and 2012. The SNOMED CT International Edition is no longer distributed in RF1. However, a conversion tool to general RF1 style files from the RF2 release files was made available during a transition period.The key enhancements in were:- More robust and consistent version representation;
- Inclusion of a moduleId and module dependency mechanism, which together enable modularization of releases while representing dependencies between modules;
- to provide an extensible and versionable way to configure Including support for subsets, maps, annotations, alternative hierarchies, etc.;
Use of an added to represent metadata about the structure of itself.
In common with the earlier release format specifies files that: - Represent the components of (concepts, descriptions and relationships)
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