DSS are interactive computer-based systems and subsystems intended to help decision makers use communications technologies, data, documents, knowledge and/or models to complete decision process tasks.
A decision support system (DSS) enable managers to get answers for unanticipated questions. Teams formed to address large problems use group decision support system (GDSS)
~User :The user is who has to make decision (middle-level management)
~System software :In essentially the operating system-program designed to work behind the scenes to handle detailed operating procedures.
~Data : Typically stored in a database and consists of two kind:
- Internal data
- External data
~Decision model : This is give the DSS its analytical capabilities,so there are three basic type:
- Strategic
- tactical
- Operational
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