- 2069 Bhadra (old course) · 4+2 marks
Types of IS; MIS vs DSS
Short answer
Information system types include transaction processing systems, office/knowledge systems, management information systems (MIS), decision support systems (DSS), executive support systems, expert systems, and enterprise systems. MIS provides routine, scheduled summary reports from internal data for structured decisions; DSS provides interactive analysis and models using internal and external data for semi-structured decisions.
What are different types of information systems? Differentiate the characteristics of a Management Information System (MIS) and Decision support system (DSS).
Types of information systems
- TPS - processes daily transactions at operational level.
- OAS / KWS - supports office and knowledge workers.
- MIS - periodic summary reports for middle managers.
- DSS - interactive analysis and models for semi-structured decisions.
- ESS - summarised strategic information for top executives.
- Expert system - rule-based advice in a specific domain.
- Enterprise systems - ERP, CRM, SCM.
MIS vs DSS
| Basis | MIS | DSS |
|---|---|---|
| Purpose | Monitor and control operations | Help solve specific, changing problems |
| Decision type | Structured, routine | Semi-structured, non-routine |
| Output | Fixed, scheduled and exception reports | Interactive analysis, simulations, what-if |
| Data | Mainly internal TPS data | Internal and external data plus models |
| Model use | Few or none | Strong use of analytical models |
| Flexibility | Low; predefined reports | High; user-driven |
| User | Middle managers | Managers and analysts |
| Example | Monthly sales summary | Budget planning with scenarios |
✓ Answer checked by Claude Opus 5.5 (high effort)
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