special topic. tps pcs ecs dss mis eis

Decision Support Systems vs. Management

Information SystemsSpecial Topic

TPS PCS ECS

DSS MIS EIS

Review: Types of Information Systems

What type of IS is WebEX?

◦Blackboard?

◦iTunes?

◦Web for Students

◦MapInfo

◦Excel

Examples

Help Transform ◦ Data Information

Manages the Information Provides Reports

Reports:◦ Graphs & Charts- easy to understand◦ Averages & Summaries

more simple more relevant

MIS

Unique Components1. Knowledge-base2. Modeling Scenario modeling Decision modeling Mathematical modeling Simulations Physical (real-world) modeling

DSS

A communication-driven DSS supports more than one person working on a shared task;

A data-driven DSS emphasizes access to and manipulation of internal company data and, sometimes, external data.

A document-driven DSS manages, retrieves, and manipulates unstructured information in a variety of electronic formats.

A knowledge-driven DSS provides specialized problem-solving expertise stored as facts, rules, procedures, or in similar structures.

A model-driven DSSemphasizes access to and manipulation of a statistical, financial, optimization, or simulation model

DSS sub-types

DSS Non-routine

decisions◦ Often unique

problems Requires data +

human knowledge/wisdom

Subjective◦ Best choice is very

unclear

MIS Routine decisions

◦ Monthly◦ Weekly◦ Daily

Operational Easy to automate Often the best

choice is obvious

Key Differences: MIS vs DSS

DSS Analyze specific

problems

MIS Performance info

◦ More feedback driven

◦ How are we doing?

Different emphasis

DSS Interactive Reports

Flexible, adaptive reports

MIS Periodic Reports

Pre-specified, fixed reports

Format Differences

DSS Analytical

modeling + Knowledge base

MIS Processing of data

Methodoloyg Differences