A constraint on the number of times that a specific attribute may be included in the same concept definition or expression.
Notes
- Constraints on attribute cardinality apply only to non-redundant attributes. A redundant attribute is an attribute with a value that is subsumed by another attribute in the same concept definition or expression.
Examples
The following expression constraint is satisfied by any clinical finding whose definition has two or more non-redundant finding sites, irrespective of the attribute group in which they are contained.
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