DSSs include knowledge based systems. A properly designed DSS is an interactive software-based system intended to help decision makers compile useful information from a combination of raw data, documents, personal knowledge, or business models to identify and solve problems and make decisions.(1)
Typical information that a decision support application might gather and present would be Accessing all of your current information assets, including legacy and relational data sources, cubes, data warehouses, and data marts, Comparative sales figures between one week and the next, Projected revenue figures based on new product sales assumptions and The consequences of different decision alternatives, given past experience in a context that is described. (2)
A decision support system may present information graphically and may include an expert system or artificial intelligence. It may be aimed at business executives or some other group of knowledge workers. (3)
(1) http://en.wikipedia.org/wiki/Decision_support_system
(2) http://www.informationbuilders.com/decision-support-systems-dss.html
(3) http://searchcio.techtarget.com/definition/decision-support-system
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