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What is candidate key?
Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.
exercise solution
Given the following set of functional dependencies {cf→ bg, g → d, cdg → f, b → de, d → c} defined on R(b,c,d,e,f,g) a. Is cf→ e implied by the FDs? b. Is dg a superkey?
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For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
Hi I have got an assignment for making an er diagram for market management software can any budy help me?
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