What is Datawarehousing

What is Datawarehousing

Data Warehouse

A Data Warehouse is a collection of an organization’s historical data especially used for reporting and analysis purpose. By William Inmon A data warehouse have following characteristics.

Subject oriented: Data Warehouse is designed to help analyze different department of business.

Integrated: A data warehouse integrates data from multiple data sources.

Nonvolatile: Nonvolatile means that, once entered into the warehouse, data should not change. 

Time Variant: Historical data is available in a data warehouse.

Data Warehousing 

 

Data Warehousing is architecture for collecting, storing and delivering data in data warehouse for an organization. 

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