GATE CSE 2012
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MCQ (Single Correct Answer)
GATE CSE 2012
Consider the following relations A, B and C:
How many tuples does the result of the following relational algebra expression contain? Assume that the schema of A ∪ B is the same as that of A. (A∪B)⋈A.Id GREATER THAN 40∨C.Id LESS THAN 15C
A) 7
B) 4
C) 5
D) 9