What is concurrency control in a distributed database, and why is it essential?

Distributed database management systems face the same concurrency control challenges as other categories of distributed systems. Is it necessary to employ concurrency control mechanisms such as two-phase locking (also known as 2PL) in a configuration with no duplicates? Explain.

How do databases manage the "phantom read" problem in concurrency control?

How does concurrency control differ in distributed databases compared to centralized databases?

Concurrency management is a challenge in distributed database systems, as it is in any distributed system. Is 2PL (two-phase locking) necessary if there are no duplicated fragments? Explain.

How does concurrency control work in a distributed database environment, and what are the common techniques to ensure data consistency?

The problems with concurrency control in distributed database management systems are similar to those in other types of distributed systems. Do we need to use two-phase locking (2PL) or some other kind of concurrency management when we have a unique setup? Explain.

Discuss the role of concurrency control in a distributed database system. What are the common concurrency control mechanisms used in DDBMS, and how do they work?

What is concurrency control in distributed databases, and why is it essential?

How does the "escalation of locks" work in managing concurrent database access?