What is a data warehouse and why is it used?

< 1 min read

A data warehouse is a central repository that stores structured data from multiple sources.
It is optimized for reporting and analysis, not transactions.
In my project, we consolidated sales, inventory, and finance data in a warehouse.
It allowed consistent, cross-functional reporting for decision-makers.
Data warehouses improve data quality and reduce reporting errors.
They enable faster queries and trend analysis over historical data.
Organizations use them to support BI and analytics initiatives.

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