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ISRO | ISRO CS 2014 | Question 42
Let x, y, z, a, b, c be the attributes of an entity set E. If {x}, {x,y}, {a,b}, {a,b,c}, {x,y,z} are superkeys then which of the following are the candidate keys?
(A)
{x,y} and {a,b}
(B)
{x} and {a,b}
(C)
{x,y,z} and {a,b,c}
(D)
{z} and {c}
Answer
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