Question: Let the relations r_1(A, B, C) and r_2(C, D, E) have the following properties: r_1 has 20,000 tuples, r_2 has 45,000 tuples, 25 tuples of

Let the relations r_1(A, B, C) and r_2(C, D, E) have

Let the relations r_1(A, B, C) and r_2(C, D, E) have the following properties: r_1 has 20,000 tuples, r_2 has 45,000 tuples, 25 tuples of r_1 fit on one block, and 30 tuples of r_2 fit on one block. Estimate the number of block accesses required, using each of the following join strategies for r_1 r_2: a. Nested-loop join b. Block nested-loop join c. Merge join d. Hash join

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