Distributed Databases Questions
Data replication in a distributed database refers to the process of creating and maintaining multiple copies of data across different nodes or sites within the database system. This is done to improve data availability, fault tolerance, and performance. Each copy of the data is synchronized periodically to ensure consistency.
Concurrency in a distributed database refers to the ability of multiple users or transactions to access and manipulate the data simultaneously without causing conflicts or inconsistencies. It involves managing concurrent access to shared data and ensuring that transactions are executed in an isolated and consistent manner. Techniques such as locking, timestamping, and optimistic concurrency control are used to handle concurrency in distributed databases.