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1. |
Consider a join (relation algebra) between relations r(R)and s(S) using the nested loop method.There are 3 buffers each of size equal to disk block size, out of which one buffer is reserved forintermediate results. Assuming size(r(R)) |
A. | relation r(R) is in the outer loop. |
B. | relation s(S) is in the outer loop. |
C. | join selection factor between r(R) and s(S) is more than 0.5. |
D. | join selection factor between r(R) and s(S) is less than 0.5. |
Answer» B. relation s(S) is in the outer loop. | |