Data Warehousing

Data Warehousing is a technique of bringing collectively all of a company's data from different computer systems, together with those connecting to customers, employees, vendors, product, inventory, and financial. The data warehouse connects different database together in order to offer a more inclusive data set for making decision. The paper considers how different ways of determining such warehouse have been developed and how confident organizations have used them to increase control over data and decision making. This reveals that organization that can develop a strong system, data warehousing is value the cost. A physical repository where relational data are specially organized to provide enterprise, cleansed data in a standardized format.