The evolution of business intelligence began decades ago with the first report mainframe, called the system output. They were mainly printed on paper, to then be distributed periodically to the manager. The first queries have sped up the process and made it possible for managers with technical expertise to create customized ad hoc reports, but few managers had the time and the skills to do so. The emergence of the data warehouse has given a great impetus to the BI aggregating all the data in one place, where he could be interrogated interactively without impacting applications with online queries and reports with increasingly easy graphical interfaces use.