Huge volumes of data are being generated across enterprises. To effectively store, integrate, and manage this data is a significant challenge for IT, and it also affects the ability of leaders to make fast, informed decisions. Enterprises need a solution that can help them store data effectively and access it quickly from anywhere. Such data stores, which collect data from the source systems known as data silos,‖ orm a data warehouse.

This paper is an overview into Data Warehousing.