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| - Any container for entities that share one or more common properties. E.g. "stone objects", "the nurses", "the Louvre Aegyptian collection", all the elections for the Italian President of the Republic.
A collection is not a logical class: a collection is a first-order entity, while a class is second-order.
- Any container for entities that share one or more common properties. E.g. "stone objects", "the nurses", "the Louvre Aegyptian collection", all the elections for the Italian President of the Republic.
A collection is not a logical class: a collection is a first-order entity, while a class is second-order.
A collection is neither an aggregate of its member entities (see e.g. ObjectAggregate class).
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