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DSS Database Issues代寫

Decision Support System
 Presented by :  Suraj Humagain(s0202096)
Introduction
A Decision Support System (DSS) is an interactive computer-based system or subsystem intended to help decision makers use communications technologies, data, documents, knowledge and/or models to identify and solve problems, complete decision process tasks, and make decisions.
Decision Support System is a general term for any computer application that enhances a person or group’s ability to make decisions
Also, Decision Support Systems refers to an academic field of research that involves designing and studying Decision Support Systems in their context of use.

Types of DSS
Communication driven
Data driven
Document driven
Knowledge driven
Model driven
DSS Architecture
The database
The model base
The interface

Characteristics of DSS
Supports managers at all level
Support for decision makers in semi structured and un structured problems
Data access
Support variety of decision processes
Support modeling and  analysis
Complete control by decision makers

Advantages
Short delivery time
User requirement specification are eliminated
Reduced implementation problems
Low costs
Speedy computations
Increased productivity of group members




DSS Componenets
Data Management Subsystem
Model Management Subsystem
Knowledge Management Subsystem
User Interface Subsystem
The User


Components of DSS











DSS Database Issues
Data warehouse
Special independent DSS databases
Extraction of data from internal, external and private sources
Web browser access of data
Multimedia databases
Object-oriented databases
Commercial database management systems (DBMS)
Decision Making Process
Define the problem (or opportunity)
Construct a model that describes the real-world problem
Identify possible solutions to the modeled problem and evaluate the solutions
Compare, choose, and recommend a potential solution to the problem

Conclusion
       DSS can be extremely beneficial to any organization’s overall performance. However , DSS can also be the cause of great confusion, misperception and even inaccurate analysis – these systems are not designed to eliminate “bad” decisions.
      
References
books.google.com.au/books?isbn=156720497X
www.irma-international.org/viewtitle/14330/
faculty.mu.edu.sa/download.php?fid=15981


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