Business Intelligence or BI are the protocols / rules / techniques that are used to finding out, digging and analyzing the current & historical business data. Most of the times it is for sales data, revenues, different products related data, etc.. The important functions in any BI tool are reporting, analysis, Analytics, data modelling, business performance, future analysis of the business. BI aims on better business decision making. That is why it is also called as Decision support system. BI uses many technologies, applications to analyze the data.