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| vincolo a due elementi (A constraint that applies to two elements, such as two classes or two associations. The constraint is shown as a dashed arrow from one element to the other, labeled by the constraint string in braces ({ })) | |||
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2 : 4 phrases in 4 subjects |
| Agriculture | 1 |
| Communications | 1 |
| Information technology | 1 |
| Microsoft | 1 |