Question

What is the main disadvantage of the index nested loop join (INLJ) approach when joining stream S with disk-based relation R?

a.

It randomly accesses R for each tuple of S.

b.

It efficiently handles fast arrival streams of updates.

c.

It reduces the disk I/O cost.

d.

It decreases the waiting time for stream tuples.

Posted under Big Data Computing

Answer: (a).It randomly accesses R for each tuple of S. Explanation:The main disadvantage of the index nested loop join (INLJ) approach is that it randomly accesses R for each tuple of S, making the disk I/O cost dominant and affecting its ability to cope with fast arrival streams of updates.

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Q. What is the main disadvantage of the index nested loop join (INLJ) approach when joining stream S with disk-based relation R?

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