+A data warehouse is a central repository, a vast lake of cleaned, transformed data, purpose-built for analytical querying. It integrates insights from disparate operational sources, empowering [Business Intelligence](/wiki/business_intelligence) and strategic [Decision Making](/wiki/decision_making) without impacting transactional systems.
+## See also
+- [Data Mining](/wiki/data_mining)
+- [ETL](/wiki/etl)
+- [Big Data](/wiki/big_data)
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