Lecture9 Systems The Systems Perspective Of A Dss

The Systems Perspective of a DSS Slides modified from Marakas A DSS is really not complete without considering one ……….. Chapter 13 in Marakas Today’s philosophical thought from Aristotle ……….. “ The whole is more than the sum of its parts, the part is more than a fraction of the whole”

What is a System? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Comparison of Open and Closed Systems

The Subsystem – Functional Decomposition ,[object Object],[object Object],[object Object],[object Object]

E.g. functional decomposition of a house This is not dissimilar to our thinking with Juniper in terms of processes and sub-processes – and the same for decisions

DSS in the Context of Information Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Context Diagrams of Two Design Approaches Decision Maker Outside Boundary Decision Maker Inside Boundary

Processes and Data Flows Within the Generalized DSS

Design Specifics Depend on Several Questions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Information Quality Issues In DSS Design ,[object Object],[object Object],[object Object],[object Object],“ Garbage in garbage out!”

Information Quality Service Levels ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Factors In Determining Information Quality

Factors In Determining Information Quality ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Factors In Determining Information Quality ,[object Object],[object Object],[object Object],[object Object],Accurate/ imprecise inaccurate/ imprecise accurate/ precise inaccurate/ precise = true value

Factors In Determining Information Quality ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Defining the DSS Information System Architecture ,[object Object],[object Object],[object Object],[object Object]

Elements of a Typical DSS Architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A generic DSS Architecture Networking and telecommunications facilities Hardware and Operating System Platforms DSS User interface End User Tools DBMS Model development Model Management Database Model Base External data End Users Programmers

Questions to Ask in Determining Platform Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Role of the Internet in DSS Development and Use ,[object Object],[object Object],[object Object],[object Object]

Key Point Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lecture9 Systems The Systems Perspective Of A Dss

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Lecture9 Systems The Systems Perspective Of A Dss