Explain ACID properties?

ACID stands for

  • Atomicity
  • Consistency
  • Isolation
  • Durablity

Modification on the data in the database either fail or succeed. The beginning of such a modification starts with a transaction and ends when a transaction finishes (either by a commit or a rollback). A software crash entails an implicit rollback.

Only valid data (valid according to integrity constraints) may be committed.

One transaction does not interfere with another. The ‘executor’ of a transaction has the feeling that he has the entire database for himself.

A committed transaction will not be lost.

Source: http://en.wikipedia.org/wiki/ACID

One Thought on “Explain ACID properties?

  1. Devendra S on March 3, 2016 at 8:01 am said:

    The explanation given was slightly wrong from the actual- here are the true meaning as per:

    • Atomicity ‐ A transaction either happens completely, or none of it happens.
    • Consistency ‐ A transaction takes the database from one consistent state to the next.
    • Isolation ‐ The effects of a transaction may not be visible to other transactions until
    the transaction has committed.
    • Durability ‐ Once the transaction is committed, it is permanent.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Post Navigation