Machine-translated by Google. Questions are authored in English.
Top

Discussion

The method of access which uses key transformation is known as

  • A.Direct
  • B.Hash
  • C.Random
  • D.Sequential

Answer: B

Correct answer: Hash

Hashing applies a transformation to the key value to compute the address of the record directly, so a lookup takes one access with no index to search. The price is that a hash file supports no range queries and needs a strategy for collisions.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.