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.
Data independence in a distributed database refers to the ability to access and manipulate data without being concerned about its physical location or the specific details of the underlying database system. It allows applications to interact with the database using a standardized interface, regardless of the distribution and organization of the data. This independence is achieved through the use of data abstraction layers and query optimization techniques.