concurrency control


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concurrency control

In a database management system (DBMS), concurrency control manages simultaneous access to a database. It prevents two users from editing the same record at the same time and also serializes transactions for backup and recovery.
References in periodicals archive ?
Reversible execution [73] is yet another approach to concurrency control in groupware systems.
The developers use the relational system for its virtues of ensuring recovery and concurrency control, associative access, the facility with which they can set up and modify relational schemas, and the ease with which they can generate query code for tables.
A number of recent studies have examined the performance of concurrency control algorithms for database management systems.
Most techniques for managing replicated data have a two-level structure: at the higher level, a replica control protocol reconstructs the object's state from its distributed components, and at the lower level, a standard concurrency control protocol synchronizes accesses to the individual components.
A conventional concurrency control algorithm would have treated such transactions as regular update transactions and subjected them to the usual protocols for synchronizing update transactions.