The BI system is a set of business reporting tools designed to enable large amounts of data to be processed in a very short time to create business reports for business decision making. Using BI reports, organization can track trends, find interdependencies between some seemingly unrelated phenomena, and even predict high-probability events.
Unlike classic transaction reports, BI reports are maximal indexed for processing multiple data, so they can display data at a high speed. Also, reports are interactive, since a view can be easily added to another dimension. In this way, information from BI reports can very easily lead to the source of the problem or bottleneck, although the databases are sometimes large and run by a lot of users.