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The Transitive Closure is the complete set of relationships between every concept and each of its super-type concepts , in other words both its parents and ancestors . A Transitive Closure History file can be generated from the SNOMED CT content using scripts provided with each release. The generated file will be of the following format and contain the valid states of the transitive closure of each concept across all previous releases:
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Field | Data type | Purpose |
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subtypeId | Id of the | concept playing the | subtype role. Set to an | Identifier of a | concept . |
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supertypeId | Id of the | concept playing the supertype role. Set to an | Identifier of a | concept . |
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Specifies the inclusive date at which the | transitive closure record became valid. |
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Specifies whether the | Identifier version's state was | active or | inactive from the point in time specified by the effectiveTime (field) . |
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