Distributed Databases Questions
Data independence in a distributed database refers to the ability to modify the physical organization or location of data without affecting the application programs that use the data. It allows for changes in the database structure or distribution to be made without requiring changes to the application code.
Replication in a distributed database involves 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. Replication ensures that data is accessible even if one or more nodes fail, and it allows for local access to data, reducing the need for remote data retrieval.