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Each attribute rule is associated with a specific rule strength (e.g.

scg-expression

Concept

ShowParts

t

term

723597001|Mandatory

concept

model

rule|

) and content type (e.g. scg-expression

Concept
t 723596005|All

SNOMED

CT

content|

). An Attribute Rule may either associate an attribute with the domains to which it may be applied (i.e. an Attribute Domain Rule), or it may associate an attribute with the range of valid concepts that may be used as its value (i.e. an Attribute Range Rule). Attribute Domain Rules also define whether or not each attribute is considered to be grouped (by a Description Logic reasoner) for the given domain, and the attribute cardinalities for that domain. 

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