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Non-lock concurrency control

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

There are several non-lock concurrency control methods, which involve the use of timestamps on transaction to determine transaction priority:

Optimistic concurrency control
- Timestamp-based concurrency control
- Validation-based concurrency control
- Multiversion concurrency control
  - Snapshot isolation

See also[edit]

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