GATE Computer Science (CS) 2020 Solved Papers

Question : 39 of 65

Marks: +1, -0

A cell in R holds a set instead of an atomic value.
$R$ has a nontrivial functional dependency $X \rightarrow A$ , wh $R$ has a nontrivial functional dependency $X \rightarrow A$ , where $X$ is not a sup and $A$ is a prime attribute.ere $X$ is not a sup and $A$ is a prime attribute.
$R$ has a nontrivial functional dependency $X \rightarrow A$ , where $X$ is not a sup and $A$ is a non- prime attribute and $X$ is a proper subset of some key.
$R$ has a nontrivial functional dependency $X \rightarrow A$ , where $X$ is not a sup and $A$ is a non- prime attribute and $X$ is not a proper subset of any key.

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