Comparative Study of Concurrency Control Techniques in Distributed Databases

In today´s world many of researches have been done on distributed databases. The main issue in distributed databases is to maintain consistency in databases. To maintain consistency in database, correctness criteria must be met. Many of the concurrency control methods are presented earlier, but they have problems about delay, performance, waiting time and number of message exchanges while maintaining correctness. Our paper presents comparison of the recent concurrency control methods considering the above mentioned parameters.