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• Each relationship is represented by a separate row in the 

  Specref
  RefType file t relationship file

  .

• Each relationship has a unique 

  Gloss
  PreSpace false t identifier

   and contains columns identifying the

  Gloss
  t relationship type

   and the concepts that are related (

  Specref
  t sourceId

   and 

  Specref
  t destinationId

  ).

• Each relationship provides defining information about the source

  Gloss
  PreSpace false t concept

  .

Change Note

• Since July 2019,

  Gloss
  t OWL axioms

  the authoritative representation of the

  Gloss
  t stated view

   of concept definitions is represented by Following enhancements to SNOMED CT during 2019, the authoritative stated representation of this defining information will be 

  Gloss
  t OWL axioms

   distributed in OWL Expression Reference Sets.

  Gloss
  t Relationships

   will continue  continue to be distributed to represent the represent 

  Gloss
  t necessary normal form

   of the

  Gloss
  t inferred view

   concept definitions.

Example

• The source, type and destination of one of the relationships for the concept 

  Concept
  t 74400008 |Appendicitis (disorder)|

   are as follows:

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