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Assuming that and are sets and and . Then has exactly tuples if contains unique values.
Consider relations , , and . Further assume that , , and . Estimate
Let R, S, and T be three relations. Then the equivalance
Assuming that and are sets and and
With relations, how many different join orders are possible?
Consider relations , , and . Further assume that , , and . Estimate
For a relation R(A,B,C,D), the equivalance
Consider relations and . Then the equivalence
Consider two relations and with and blocks. Further consider a buffer pool with frames. What is the minimum number of blocks that have to be transferred when computing using block nested loop join?
Consider relations , , and . Further assume that , , and . The catalog additionally has V(R,C) = 900, V(S,C) = 1100, V(S,E) = 50, and V(T,E) = 100. Estimate