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A _____ key can be described as a minimal superkey, a superkey without any unnecessary attributes.

A _____ key can be described as a minimal superkey, a superkey without any unnecessary attributes.
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A _____ key can be described as a minimal superkey, a superkey without any unnecessary attributes.

User Jduprey
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I think it's a candidate key, but I'm not too sure
User David Coggins
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