Non-lock concurrency control
From Wikipedia, the free encyclopedia.

In computer science, in the field of databases, non-lock concurrency control is concurrency control method used in relational databases without using locking.

There are several non-lock concurrency control methods:

• Optimistic concurrency control
• Timestamp-based concurrency control
• Multiversion concurrency control

They involve the use of timestamps on transaction to determine transaction priority.

The original article can be found at: http://en.wikipedia.org/wiki/Non-lock_concurrency_control.
All text is available under the terms of the GNU Free Documentation License.