Explain hash file organization?

Hash functions

a) The distribution is uniform

Hash functions assign each bucket the similar number of search -key values from the set of all possible search-key values

b) The distributed in random

In the average case every bucket will have nearly same no of values assigned to it, regardless of the actual distribution of search-key values

Handling of bucket overflows

o  Insufficient buckets

o  Skew

Open hashing

Under an alternative approach known as open hashing

Close hashing

The form of hash structure that we have just explained is something referred to as close hashing.

Hash indices