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kaksielementtinen rajoite (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 ({ })) |
2 : 3 a las frases, 3 temas |
Agricultura | 1 |
Comunicaciones | 1 |
Tecnología de la información | 1 |