software

Data Warehouse

Definition

A data warehouse is a centralized repository optimized for analytical queries, storing historical data from multiple operational sources in a structured, integrated form. Warehouses use dimensional modeling (star or snowflake schemas) to organize data for business intelligence and reporting.

Cloud warehouses like Snowflake, BigQuery, and Redshift separate storage from compute, enabling independent scaling.

Related Terms

ETL

Extract, Transform, Load

OLAP

Online Analytical Processing

Data Lake

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