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 or users accessing that data. It allows for changes in the database structure or distribution without requiring changes to be made in the application programs.
Consistency in a distributed database refers to the property that ensures all copies of data in different locations are kept synchronized and up-to-date. It guarantees that all users accessing the database will see a consistent view of the data, regardless of the location or the copy they are accessing. Consistency is maintained through various mechanisms such as distributed transactions, concurrency control, and replication techniques.