ngalvin9980 ngalvin9980
  • 12-04-2024
  • Engineering
contestada

Suppose R is a relation with attributes A1,A2,.....An. As a function of n, tell how many superkeys R has, if
a) The only key is A1
b) The only keys are A1 and A2
c) The only keys are {A1,A2} and {A3,A4}
d) The only keys are {A1, A2} and {A1,A3}

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