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Zero-dimensional entity classes correspond to object classes in the legacy parlance. 1-dimensional entity classes are relationship classes with single object class dimension. |
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1-dimensional entity classes select a subset of an underlying object class? |
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Yes. |
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Are we going to keep the two existences of the legacy object classes? They sometimes cause confusion. |
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Where do we still use object classes? |
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What is zero-dimensional entity class? A normal object class would be one-dimensional?
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