1
GATE CSE 1994
True or False
+1
-0
Give a relational algebra expression using only the minimum number of operators from $$\left( { \cup ,\, - } \right)$$ which is equivalent to $$R \cap S$$.
A
TRUE
B
FALSE
2
GATE CSE 1994
True or False
+1
-0
An instance of a relational scheme R(A, B, C) has distinct values for attribute A. Can you conclude that A is a candidate key for R?
A
TRUE
B
FALSE
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