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Which of the following hash function classifies data into least number of buckets?

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in RDBMS by (118k points)
Which of the following hash function classifies data into least number of buckets?

(a) Sum of digits modulo 8

(b) Sum of digits modulo 5

(c) Sum of digits modulo 2

(d) Sum of digits

I have been asked this question in semester exam.

This key question is from Dynamic Hashing topic in section Indexing and Hashing of RDBMS

1 Answer

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The correct choice is (a) Sum of digits modulo 8

For explanation I would say: The sum of digits modulo 2 classifies the data into only 2 buckets i.e. 0 and 1.

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