Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Business intelligence tools are a type of application software designed to report, analyze and present data. The tools generally read data that have been previously stored, often, though not necessarily, in a data warehouse or data mart. The key general categories of business intelligence tools are: * Spreadsheets * Reporting and querying software: tools that extract, sort, summarize, and present selected data * OLAP: Online analytical processing * Digital Dashboards * Data mining * Decision engineering

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