The Decision Support System components are all software. They are housed in a computer and can be facilitated by additional software (such as multimedia). Tools like Excel include some of the components and therefore can be used for DSS construction by end users.
The figure alse illustrates how the DSS works. The DSS users get their data from the data warehouse, databases, and other data sources. When a user has a problem, it is evaluated by the processes. A DSS system is the constructed. Data are entered from the source on the left side and the models on the right side in figure below. Knowledge can be also tapped from the corporate knowledge base. As more problems are solved, more knowledge is accumulated in the organizational knowledge base.
The DSS methodology just described was designed initially to support individual decision makers. However, most organizational decisions are made by groups, such as an executive committee.
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