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SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo

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150 | <strong>SNOMED</strong> CT <strong>Release</strong> <strong>Format</strong> 1 (<strong>RF1</strong>) <strong>Guide</strong> July 2012<br />

Note:<br />

This field allows a Relationship to be referenced by a Subset or Extension.<br />

3.2.9.3.2. Data Fields<br />

The Relationships Table contains the following data fields:<br />

• ConceptId1<br />

• RelationshipType;<br />

• ConceptId2<br />

• CharacteristicType<br />

• Refinability<br />

• RelationshipGroup<br />

3.2.9.3.2.1. ConceptId1<br />

Table 82: -<br />

Relationships Table<br />

Data Field<br />

ConceptId1<br />

Field Type<br />

SCTID<br />

Permitted characters<br />

Digits 0 to 9 only<br />

Length<br />

6 to 18<br />

The unique <strong>SNOMED</strong> CT Identifier of the Concept which is the source of this Relationship.<br />

Note:<br />

This field provides the first association between the Relationships and Concepts tables and is sometimes<br />

referred to as the "object."<br />

3.2.9.3.2.2. RelationshipType<br />

Table 83: -<br />

Relationships Table<br />

Data Field<br />

RelationshipType<br />

Field Type<br />

SCTID<br />

Permitted characters<br />

Digits 0 to 9 only<br />

Length<br />

6 to 18<br />

The unique <strong>SNOMED</strong> CT Identifier of the Concept which represents the type of relationship between the<br />

related Concepts.<br />

Note:<br />

A special category of Concepts is used to represent RelationshipTypes.<br />

This field provides the second association between the Relationships and Concepts tables and is sometimes<br />

called the " attribute" or "role."<br />

© 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434

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