Which technique is used to maintain copies of data at multiple sites in a distributed database?

Options

  • A. Fragmentation
  • B. Replication
  • C. Normalization
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. Replication

Detailed Explanation

Explanation: Replication maintains copies of data at multiple sites. It can improve availability and read performance but requires synchronization.