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This section addresses the types of terminology service that are required to enable effective use of the SNOMED CT hierarchies and definitions when retrieving data.

The actual process of data retrieval is a record service , rather than a terminology service because it involves interactions with a database containing instance data (e.g. an electronic health record or data warehouse repository). However, queries may use predicates that specify subtypes of particular concepts or specify concepts that have particular defining Relationships . In order to resolve these queries, the application will need to provide or use Terminology services , adapted to the implementation model in use. The use of either a local extension with a "Managed content addition" strategy, or postcoordinated expressions strategy with an expressions reference table, has an effect on the required set of Terminology services .

See also

Data Analytics with SNOMED CT