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 in the network. This is done to improve data availability, fault tolerance, and performance. Each copy of the data is synchronized periodically to ensure consistency.
Data allocation, on the other hand, involves determining where and how the data should be stored in the distributed database. It involves deciding which nodes or sites should hold specific data items or partitions based on factors such as data access patterns, network latency, and load balancing. The goal of data allocation is to optimize data access and minimize communication overhead in the distributed system.