Differentiate between Prime and Non prime attributes Database Management Systems 10CS54 VTU notes DECJAN 2013June 2016

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Asked On2018-09-06 03:08:29 by:anonymousguy7799

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A non-prime attribute of R is an attribute that does not belong to any candidate key of R. A transitive dependency is a functional dependency in which X → Z (X determines Z) indirectly, by virtue of X → Y and Y → Z (where it is not the case that Y → X). A-X, the set difference between A and X is a prime attribute (i.e., A-X is contained within a candidate key 
c) Consider the Relation R and FD A->B,C->DF,AC->E,D->F?WHAT IS KEY AND Highest normal form? if it is not in 3nf find decomposition that is lossless and dependency preserving? 8 marks Ans: The key here is E because it has no incoming only outgoing edges. A->B,C->DF,AC->E,D->F 

Answerd on:2018-09-06 Answerd By:Nikhil-bharadwaj

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