Business intelligence involves managed data infrastructure and business analysts who apply tools to selectively extract historical data from silos of databases, transform the data to a consistent format and load data into tables within a repository. An enterprise data warehouse is the source repository of data sets for all the tabular information collected in an organization. Organizations also build data marts, which are subsets of a data warehouse or standalone, purpose-oriented views of a particular set of information.
In either case, analysts tackle business problems by creating questions that query a mart or warehouse to return reports that can be examined in greater detail through the use of equation-based analytical and graphic visualization tools.
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