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What is Data Warehouse?

Md. Saifur Rahman

What is Data Warehouse?

The data warehouse is a logical collection of data and information that is collected from various operational databases. It is used to create support for business analysis, business intelligence, and the decision-making process.

A data warehouse is a large, centralized repository of data that is specifically designed to support business intelligence (BI) activities, such as reporting, data analysis, and data mining. A data warehouse typically stores data from multiple sources in a way that allows for efficient querying and analysis. The data in a warehouse is optimized for reporting and analysis, rather than transaction processing, and is often stored in a multi-dimensional format that enables advanced analysis. The data in a warehouse is typically historical, meaning it is not updated in real-time but is instead updated on a regular basis through a process known as extract, transform, and load (ETL).

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