Given a relational schema R with attributes A, B, C, and D, where functional dependencies B ACD and C D are supposed to hold (a) What are all the keys in ABCD (b) Give example of a superkey in ABCD that is not a key (c) Give example of a superkey in ABCD that is also a key (d) Give example of a tr...

Lets break down each part of your question a What are all the keys in ABCD A key is a minimal set of ...

Given a relational schema R with attributes A, B, C, and D, where functional dependencies B->...

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Given a relational schema R with attributes A, B, C, and D, where functional dependencies B->...

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