In a data warehouse scenario, what does a "materialized view" specifically help with?
- Data encryption
- Data extraction
- Speeding up query performance
- Storing historical data
A "materialized view" in a data warehouse is a precomputed summary table that helps speed up query performance. It stores aggregated or computed data, reducing the need to perform complex calculations during queries, thereby improving response times for analytical queries. Materialized views are valuable in data warehousing for optimizing query performance.
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