Decision Support Systems - Rule Based Calculation

In Business Intelligence Systems, there are two general kinds of applications: Executive Information Systems, and Decision Support Systems. Executive Information Systems (sometimes known as Scorecards or Dashboards, depending on their graphical presentation) are designed to deliver specific key information to top managers at a glance, with little or no interaction with the system. A decision support system is an analytical application that permits the user to call up information from the data warehouse and manipulate it to derive actionable information.