Purpose

An 

The SNOMED CT International Release contains two 

• The 

  Concept
  t 733073007|OWL axiom reference set (foundation metadata concept)|

  , in which the OWL expressions represent and axioms that form part of the definition of the 

  Gloss
  t concept

   identified by the 

  Specref
  t referencedComponentId

  .
• The 

  Concept
  t 762103008 |OWL ontology reference set (foundation metadata concept)|

  , in which the OWL expressions represent essential information about an ontology. This information includes, namespaces, ontology URI, ontology version URI, and import statements. The 

  Concept
  t 762103008 |OWL ontology reference set (foundation metadata concept)|

   enables the use of prefixes in the ontology 

Data Structure

An 

Metadata

The following metadata supports this reference set: 

	900000000000454005 |Foundation metadata concept|
		900000000000455006 |Reference set|
			762676003 |OWL expression type reference set|
				762103008 |OWL ontology reference set (foundation metadata concept)|
				733073007 |OWL axiom reference set (foundation metadata concept)|
		900000000000457003|Reference set attribute|
			706999006 |Expression|
				762677007 |OWL expression|
			900000000000459000 |Attribute type|
				900000000000465000 |String (foundation metadata concept)|
				762678002 |OWL 2 language syntax|

Descriptor Template and Examples

The reference set example tables on this page have been revised as follows to aid clarity and understanding:

• The first four columns which are present in all release files are not shown. The omitted columns ( id, effectiveTime, active) are used in the same way in all referenced sets to support identification, versioning and packaging. They do not directly affect the specific features of a particular reference set or reference set type.
• Reference set columns that contain SNOMED CT identifiers are expanded to show details of the concept or description referenced by that identifier. In some cases, the term is shown in the same column using the expression syntax, in other cases an additional column with a name suffix '_term' has been added. In the standard reference set files only the identifier is present in the column and there is no added column for the term. When using reference sets, the term and other details of the component are looked up from the relevant component release files.

Descriptor Template

The table below shows the descriptors that define the structure of the 

OWL Ontology Reference Set Example

OWL Axiom Reference Set Example