723592007 |MRCM attribute range reference set| allows attributes to be associated with a valid value range for a given SNOMED CT content type and rule strength. The range of each attribute is defined using an Expression Constraint. This expression constraint represents the set of concepts, expressions, or concrete values that may be used as the value of the given attribute.1
The 723592007 |MRCM attribute range reference set|also provides a summary of the concept model rule associated with each attribute (including all valid domains and the given range) using an Expression Constraint representation. This attribute rule can be completely auto-generated by combining information from the 723604009 |MRCM attribute domain reference set| and the 723592007 |MRCM attribute range reference set| .
An 723592007 |MRCM attribute range reference set| is structured as shown in the following table.
|Part of Primary Key|
|NO||YES (Full /Snapshot)|
An expression constraint, which defines the set of concepts that may be used as the value of the given attribute (identified by referencedComponentId).
This string can be parsed using the ABNF syntax defined for the Expression Constraint Language .
If ranges using concrete values are required, the Expression Constraint Language can be extended with the keyword "TYPE", by replacing the simpleExpressionConstraint rule with the following two rules:
simpleExpressionConstraint = [constraintOperator ws] eclFocusConcept / typeKeyword ws conceptReference
For example, the following range includes the set of all integers: TYPE 900000000000476001 |Integer|
Any descendant of 900000000000459000 |Attribute type|may be used as the type of an attribute range.
An Expression Constraint that captures the domain, range and cardinality constraints for the given attribute, rule strength and content type.
A subtype of 723573005 |Concept model rule strength|which specifies whether the given rule is mandatory (resulting in an error) or optional (resulting in a warning).
A subtype of 723574004 |Content type|which indicates the type of SNOMED CT content over which this rule applies.
The following metadata hierarchy supports this reference set:
|1||If ranges including concrete values (such as integers or strings) are required, the Expression Constraint Language can be extended, as described for rangeConstraint in the Data Structure section on this page.|
|2||Please note that the 723574004 |Content type| hierarchy is designed using 'universal restriction' logic. The hierarchy may therefore appear to be 'upside down'. However, it was designed in this way because if an MRCM rule applies to 723596005 |All SNOMED CT content| then it also applies to the Content Types that are a supertype of this - including 723594008 |All precoordinated SNOMED CT content| and 723595009 |All postcoordinated SNOMED CT content| .|
Notes on the tables used to show descriptors and examples The reference set example tables on this page have been revised as follows to aid clarity and understanding:
Reference Set Descriptor and Example Data
Notes on the tables used to show descriptors and examples
The reference set example tables on this page have been revised as follows to aid clarity and understanding:
The table below shows the reference set descriptor for a reference set that follows the 723592007 |MRCM attribute range reference set| pattern.
The table below shows some example rows from a reference set that follows the format of the 723592007 |MRCM attribute range reference set|.