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Is a super key a primary key?
Questioner：Harper Wilson 2023-05-05 16:07:26
The most authoritative answer in 2024
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Zoe White——Studied at the University of Barcelona, Lives in Barcelona, Spain.
All the keys that are unique and can be differentiated upon in the table. The super key is a primary key with additional attributes, this extra information is used to uniquely identify an instance of the entity set. A candidate key is the most minimal subset of fields that uniquely identifies a tuple.read more >>+119962023-05-10 16:07:26
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