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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:

concept subtype Identifier concept concept Identifier concept transitive closure Identifier active inactive

Anchor
_c37baf70-91b0-4d9b-ba7f-6a1541bbc506__0
_c37baf70-91b0-4d9b-ba7f-6a1541bbc506__0
Table 13. Transitive Closure History File - Detailed Specification

 

 

Field

Data type

Purpose

 

subtypeId

SCTID (data type)

Id of the

playing the

role. Set to an

of a

.

 

supertypeId

SCTID (data type)

Id of the

playing the supertype role. Set to an

of a

.

 

effectiveTime (field)

Time (data type)

Specifies the inclusive date at which the

record became valid.

 

active (field)

Boolean (data type)

Specifies whether the

version's state was

or

from the point in time specified by the effectiveTime (field) .

 

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