An association between a source and a destination . 

Notes 

• Each relationship is represented by a separate row in the .

• Each relationship has a unique  and contains columns identifying the  and the concepts that are related ( and ).

• Each relationship provides defining information about the source .

Change Notice

• Since July 2019, the authoritative representation of the of concept definitions are represented by  distributed in OWL Expression Reference Sets.  continue to be distributed to represent  of the  concept definitions.

Example

• The source, type and destination of one of the relationships for the concept  are as follows:

Alternatives

• Relationship

Related Links

• Relationship File Specification
• Concept Enumerations for Relationship typeId