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CIL Part B
mohit jain
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Jun 25
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mohit jain
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Consider the following relation schema R and S along with their tuple sets.
R(A, B) = {
<a1, b1 >, <a2, b1>, <a3, b1>,
<a4, b1>, <a1, b2>, <a3, b2>,
<a2, b3>, <a3, b3>, <a4, b3>,
<a1, b4>, <a2, b4>, <a3, b4>
}
S(A) = {a1, a2, a3}
What is the value of T ← R/S, where “/” represents the Relational Algebra “division” operation?
A. T(B) = {b1, b2, b4}
B. T(B) = {b1, b3, b4}
C. T(B) = {b1, b4)
D. T(B) = {b1, b3}
databases
relational-algebra
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