A data warehouse is the main repository of an organization's historical data, its
corporate memory. It contains the raw material for management's
decision support system. The critical factor leading to the use of a data warehouse is that a data analyst can perform complex queries and analysis, such as
data mining, on the information without slowing down the operational systems.
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StatSoft defines data warehousing as a process of organizing the storage of large, multivariate data sets in a way that facilitates the retrieval of information for analytic purposes.
For more information, see
Data Warehousing.
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