GK Question

technology medium mcq

Which database feature enables querying across multiple data sources without moving data?

  1. Data Virtualization
  2. ETL
  3. Replication
  4. Sharding

Answer: Data Virtualization

Data Virtualization provides unified query interface across heterogeneous sources (SQL, NoSQL, APIs) without physical integration. Critical for agile analytics and federated data architectures.

Topic Database Technologies
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