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Each attribute rule is associated with a specific rule strength (e.g.
| Scg expression |
|---|
|
723597001|Mandatory concept model rule| |
) and content type (e.g.
| Scg expression |
|---|
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.