Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 07 May 2018 My Price 2.00

nontrivial FD’s

Consider a relation with schema R(A,B,C ,D ) and FD’s A B → C , C → D , and D → A.

a) What are all the nontrivial FD’s that follow from the given FD’s? You should restrict yourself to FD’s with single attributes on the right side.

b) What are all the keys of R?

c) What are all the super keys for R that are not keys?

 

Answers

Maurice Tutor
(5)
Status NEW Posted 07 May 2018 05:05 PM My Price 2.00

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