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Term | Definition | ||||
|---|---|---|---|---|---|
Augmented Backus-Naur Form (ABNF) | A language used to define the formal syntax of another language (as defined by Internet Standard 68, RFC 5234). | ||||
| The set of rules that govern the way in which SNOMED CT expressions are represented as a plain text string. | ||||
| A set of rules that determines the permitted sets of relationships between particular types of concepts. | ||||
| A structured combination of one or more concept identifiers used to express a clinical idea. | ||||
Expression Constraint | A computable rule that can be used to define a bounded set of clinical meanings. | ||||
| Expression Constraint Template | A SNOMED CT Expression Constraint containing slots that are intended to be processed at a later time. | ||||
| Expression Template | A SNOMED CT Expression containing slots that are intended to be processed at a later time. | ||||
| A representation of the rules that comprise the SNOMED CT Concept Model in a form that can be processed by computer software and applied to validate content. | ||||
| Representation of a clinical meaning using a combination of two or more concept identifiers is referred to as a postcoordinated expression. | ||||
| Representation of a clinical meaning using a single concept identifier is referred to as a precoordinated expression. | ||||
| Query Template | A SNOMED CT Query containing slots that are intended to be processed at a later time. | ||||
| A SNOMED CT file structure consisting of a set of references to SNOMED CT components. | ||||
| Slot | A placeholder for a SNOMED CT concept, string or concrete value that is intended to be processed (e.g. by filling with a specific value) prior to the use of the containing SNOMED CT expression, constraint or query. | ||||
Substrate | The SNOMED CT content over which an expression constraint is evaluated or a query is executed. | ||||
| Template | A SNOMED CT expression, constraint or query containing one or more slots that are intended to be processed at a later time. |
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