A decision support system (DSS) is an interactive computer-based system that helps decision-makers use data and models to solve problems. It utilizes decision rules, models, databases, and the insights of decision-makers. DSS architecture includes programs like spreadsheets, databases, model base management systems, and statistical and graphics packages. DSS can use behavioral, management science, and operations research models. They are designed to help support semi-structured, complex problems and allow decision-makers to interact naturally.

1. DECISION SUPPORT SYSTEM

2. DEFINITION OF DSS Scott Morton defined Decision Support System (DSS) as interactive computer based system, which help decision makers utilize data and models to solve instructed problems

3. IN SIMPLE DSS A DSS is an interactive, flexible and adaptable computer based information system that utilizes decision rules, models and a model base coupled with a comprehensive database and the decision-makers own sights

4. Architecture OF DSS A variety of programs supported by the DSS include spreadsheet programs, personal database management system, Model Base Management system (MBMS), word processing packages, graphics generators, statistical packages and other special purpose programs

5. Types of Model used by DSS Behavioral Model Management Silence Model Operations Research Model

6. Behavioural Model Focus is on studying or understanding the behaviors trends amongst the variable. Decision could be arised based on behavior relationship Eg: Trend Analysis, Forecasting , Regression Analysis etc

7. Management Silence Models Developed based up on the principles of Management accounting and Econometrics etc. Eg Budgetary system, Cost accounting, Inventory

8. Operational Research Model Basically application of mathematical formula for arriving at optimum solution Mainly mathematical models Represent real life problems situations Eg: Linear programming ABC analysis, MRP etc

9. Architecture of a Generic DSS Appliaction Video

10. Characteristic of a decision support system Ability to support the solution of complex problems Fast response to unexpected situation that result in changed inputs Designed to help support decision that are formulated as semi-structured, complex problems may be constructed to support on time decisions DSS is typically designed for either a particular decision-maker or a group of decision makers: Allows the decision-makers to interact in a natural manner due to the careful design of the interface

11. Characteristic of a decision support system DSS generator ( software) can be used It is a way to organize information intended for use decision making A decision support system is best conceptualized as a process instead of a product Ability to quickly and objectively try different strategies under different configuration Facilities communication Consistent and objective decision Others

12. Components of DSS The Database and its management The model base and its management The hardware The user system interface

13. Capabilities of DSS Can update or manipulate the database Create special (ad Hoc) reports in a desired format Perform calculation and execute aggregation of data Produce reports, memos, letters and resumes Perform financial analysis Perform either with standard mathematical models Special ratio analysis, comparative analysis or the consolidation

14. Functions of DSS Application Becoming familiar with the problem Domain Determining sensitivity of results to change in decision variable Identifying patterns Predicting decision outcomes Developing models of business processes Facilitating Group communication

15. Group Decision Support Systems (GDSS) This is also called as Group support system or computerized collaborative work system (CCWS) The user interface is expanded to include computers that are connected in some manner. In this way, members of the group can communicate with the DSS or with other members of the group If they are geographically disbursed, they each have a window at their computer that displays the public screen

16. Definition of GDSS GDSS is an interactive, computer based system that facilities solution of unstructured problems by a set of decision makers working together as a group

17. Components of GDSS Hardware Software Communication equipment People Procedure

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