A relation r(A,B) in a relational database has 1200 tuples. The attribute A…
GATE · 2021 · CS · Set 1 · Computer Science & IT
A relation r(A,B) in a relational database has 1200 tuples. The attribute A has integer values ranging from 6 to 20, and the attribute B has integer values ranging from 1 to 20. Assume that the attributes A and B are independently distributed.
The estimated number of tuples in the output of σ(A>10)∨(B=18)(r) is ____________.
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