Data Warehouse Stores data that have been extracted from the various

Data warehouse stores data that have been extracted

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Data Warehouse Stores data that have been extracted from the various operational, external, and other databases of an organization. It a central source of the data that have been cleaned, transformed, and cataloged so they can be used by managers and other business professionals for data mining, online analytical processing, and other forms of business analysis, market research and decision support. Data Warehouse may be subdivided into data marts, which hold subsets of data from the warehouse that focus on specific aspect of a company, such as department or business process.
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Data Mining Data Mining is a major use of data warehouse. In data mining, the data in a data warehouse are analyzed to reveal hidden patterns and trends in historical business activity. It basically use to help managers make decisions about strategic changes in business operations to gain competitive advantages in the marketplace. We discuss data mining, online analytical processing (OLAP) and other technologies that analyze the data in databases and data warehouse to provide vital support for business decisions.
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