# cardinality

## cardinality

The actual or permitted number of elements in a set or other grouping.

#### Notes

* Modeling rules include constraints on the minimum and maximum *cardinality* of particular attributes or associations between classes.

#### Example

* A cardinality of *\[1..5]* means that all clinical meanings that satisfy the given expression constraint must have at least one and at most five attributes, that match the given attribute criteria.

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