Distributed Databases Questions
Data concurrency refers to the ability of multiple users or processes to access and modify the same data simultaneously in a distributed database system. It ensures that concurrent transactions can be executed without interfering with each other, maintaining data consistency and integrity.
Replication, on the other hand, involves creating and maintaining multiple copies of data across different nodes or sites in a distributed database. The purpose of replication is to improve data availability, fault tolerance, and performance. It allows users to access data from the nearest or most suitable replica, reducing network latency and improving response time. Replication also provides data redundancy, ensuring that data remains accessible even in the event of node failures or network disruptions.