Multiplicity
You can specify whether you need to allow for multiple copies of an element.
The following table describes the multiplicity values you can specify:
| Indicator | Meaning |
|---|---|
| 0..1 | No instances or one instance (optional). |
| 0..n | Multiple instances from zero to n where n is greater than zero. |
| 0..* | Any number of instances; * denotes that there is no limit. |
| n..m | Multiple instances where
n and
m are zero or more. For example:
1..2 1..* The latter would mean that there must be at least one instance, but there is no upper limit. |
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