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What is an attribute?
Explain what is being conveyed here. What are the constraints?
Explain what is being conveyed here. What are the constraints?
True or false: A weak entity cannot be uniquely identified without the candidate key of its owner entity.
The relationship between an owner entity and a weak entity is ___ to ___.
True or false: By default, ISA hierarchies do not enforce covering constraints.
True or false: By default, overlap between inheriting entities in an ISA hierarchy is allowed.
