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Data Warehousing Overview With the advent of information technology coupled with new concepts and tools, data warehousing has evolved throughout the years and has revolutionized managers ability to analyze, plan, and react to changing business conditions in a much more rapid fashion. Data warehousing has met executives and business analystsˇ¦ demand for a consolidated view of diverse data that is spread across disparate platforms throughout the enterprise. A data warehouse is a repository of integrated information, available for making queries and analysis over data that originally came from data sources. (Palmerˇ¦s slides) Unlike most systems, a data warehouse is set up according to business rather than computer logic, thus allowing users to churn and search through a large storage area of consumer data, looking for relationships and making queries. This practice of extracting data from a data warehouse is data mining. (Wailgum 2001) Functions/Uses Clearly, the main goal of data warehousing is to free the information that is locked up in the operational databases and to mix it with information from other, often external, sources of data.
Approximate Word count = 695
Approximate Pages = 2.8
(250 words per page double spaced)
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