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

Discussion

Concurrency control is important for which of the following reasons?

  • A.To ensure data integrity when updates occur to the database in a multiuser environment
  • B.To ensure data integrity when updates occur to the database in a single-user environment
  • C.To ensure data integrity while reading data occurs to the database in a multiuser environment
  • D.To ensure data integrity while reading data occurs to the database in a single-user environment

Answer: A

Correct answer: To ensure data integrity when updates occur to the database in a multiuser environment

Concurrency control exists because several users may update at once. Reads alone cannot corrupt anything, and with a single user there is no interleaving to control - so it is the combination of updates and multiple users that creates the problem.

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

Post your comment

Please log in or register to post a comment.