A data warehouse is a facility for managing an organization's business intelligence data. A data warehouse is a type of data management system designed to enable and support business intelligence (BI) activities, particularly analytics. Data warehouses are intended only for querying and analysis and often contain large amounts of historical data.
Data within a data warehouse is typically obtained from a wide range of sources such as application log files and transactional applications. Business users rely on reports, dashboards, and analytics tools to derive insights from their data, monitor business performance, and support decision-making. Data warehouses power these reports, dashboards, and analytics tools by efficiently storing data to minimize data input and output (I/O) and quickly deliver query results to hundreds and thousands of users simultaneously.
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