principles of information systems eighth editionwichai/321350...principles of information systems,...
TRANSCRIPT
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Principles of Information Systems
Eighth Edition
Chapter 10Information and Decision Support
Systems
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2Principles of Information Systems, Eighth Edition
Principles and Learning Objectives
• Good decision-making and problem-solving skills are the key to developing effective information and decision support systems– Define the stages of decision making– Discuss the importance of implementation and
monitoring in problem solving
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3Principles of Information Systems, Eighth Edition
Principles and Learning Objectives (continued)
• The management information system (MIS) must provide the right information to the right person in the right format at the right time– Explain the uses of MISs and describe their inputs
and outputs– Discuss information systems in the functional areas
of business organizations
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4Principles of Information Systems, Eighth Edition
Principles and Learning Objectives (continued)
• Decision support systems (DSSs) are used when the problems are unstructured– List and discuss important characteristics of DSSs
that give them the potential to be effective management support tools
– Identify and describe the basic components of a DSS
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5Principles of Information Systems, Eighth Edition
Principles and Learning Objectives (continued)
• Specialized support systems, such as group support systems (GSSs) and executive support systems (ESSs), use the overall approach of a DSS in situations such as group and executive decision making– State the goals of a GSS and identify the
characteristics that distinguish it from a DSS– Identify the fundamental uses of an ESS and list the
characteristics of such a system
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6Principles of Information Systems, Eighth Edition
Why Learn About Information and Decision Support Systems?
• True potential of ISs is to help employees make more informed business decisions
• These systems can cut costs, increase profits, uncover new opportunities
• Examples– Transportation coordinator can find least expensive
way to ship products– Loan manager can determine creditworthiness– Store managers can better maintain inventory
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7Principles of Information Systems, Eighth Edition
Decision Making and Problem Solving
• Every organization needs effective decision making• In most cases, strategic planning and overall goals
of the organization set the course for decision making
• Information systems can assist with strategic planning and problem solving
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8Principles of Information Systems, Eighth Edition
Decision Making as a Component of Problem Solving
• Decision-making phase: first part of problem-solving process– Intelligence stage: potential problems or
opportunities are identified and defined– Design stage: alternative solutions to the problem
are developed– Choice stage: requires selecting a course of action
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9Principles of Information Systems, Eighth Edition
Decision Making as a Component of Problem Solving (continued)
Figure 10.1: How Decision Making Relates to Problem Solving
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10Principles of Information Systems, Eighth Edition
Decision Making as a Component of Problem Solving (continued)
• Problem solving: goes beyond decision making to include implementation and monitoring stages
• Implementation stage: a solution is put into effect• Monitoring stage: decision makers evaluate the
implementation
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11Principles of Information Systems, Eighth Edition
Programmed Versus Nonprogrammed Decisions
• Programmed decision– Decision made using a rule, procedure, or
quantitative method– Easy to computerize using traditional information
systems• Nonprogrammed decision
– Decision that deals with unusual or exceptional situations
– Not easily quantifiable
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12Principles of Information Systems, Eighth Edition
Optimization, Satisficing, and Heuristic Approaches
• Optimization model: find the best solution, usually the one that will best help the organization meet its goals
• Satisficing model: find a good—but not necessarily the best—problem solution
• Heuristics: commonly accepted guidelines or procedures that usually find a good solution
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13Principles of Information Systems, Eighth Edition
Optimization, Satisficing, and Heuristic Approaches (continued)
Figure 10.2: Optimization Software
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14Principles of Information Systems, Eighth Edition
Sense and Respond
• Sense and Respond (SaR) approach– Determining problems or opportunities (sense)– Developing systems to solve the problems or take
advantage of the opportunities (respond)• One way to implement SaR is through
management information and decision support systems
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15Principles of Information Systems, Eighth Edition
An Overview of Management Information Systems
• Management information system (MIS)– Integrated collection of people, procedures,
databases, and devices– Provides managers and decision makers with
information to help achieve organizational goals– Can give the organization a competitive advantage– Providing the right information to the right people in
the right format and at the right time
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16Principles of Information Systems, Eighth Edition
Management Information Systems in Perspective
• Management information system (MIS) (continued)– Provides managers with information that supports
effective decision making and provides feedback on daily operations
• Use of MISs spans all levels of management
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17Principles of Information Systems, Eighth Edition
Figure 10.3: Sources of Managerial Information
Management Information Systems in Perspective (continued)
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18Principles of Information Systems, Eighth Edition
Inputs to a Management Information System
• Internal data sources– TPSs and ERP systems and related databases– Data warehouses and data marts– Specific functional areas throughout the firm
• External data sources– Customers, suppliers, competitors, and stockholders
whose data is not already captured by the TPS– Internet– Extranets
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19Principles of Information Systems, Eighth Edition
Outputs of a Management Information System
Figure 10.4: An Executive Dashboard
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20Principles of Information Systems, Eighth Edition
Outputs of a Management Information System (continued)
• Scheduled report: produced periodically, or on schedule, such as daily, weekly, or monthly– Key-indicator report: summary of previous day’s
critical activities• Demand report: developed to give certain
information at someone’s request• Exception report: automatically produced when a
situation is unusual or requires management action• Drill-down reports: provide increasingly detailed
data about a situation
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21Principles of Information Systems, Eighth EditionFigure 10.5: Reports Generated by an MIS
Outputs of a Management Information System (continued)
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22Principles of Information Systems, Eighth Edition
Table 10.1: Guidelines for Developing MIS Reports
Outputs of a Management Information System (continued)
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23Principles of Information Systems, Eighth Edition
Characteristics of a Management Information System
• Provide reports with fixed and standard formats• Produce hard-copy and soft-copy reports• Use internal data stored in computer system• Allow users to develop custom reports• Require user requests for reports developed by
systems personnel
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24Principles of Information Systems, Eighth Edition
Functional Aspects of the MIS
• Most organizations are structured along functional lines or areas
• MIS can be divided along functional lines to produce reports tailored to individual functions
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25Principles of Information Systems, Eighth EditionFigure 10.6: An Organization’s MIS
Functional Aspects of the MIS (continued)
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26Principles of Information Systems, Eighth Edition
Financial Management Information Systems
• Financial MIS: provides financial information to executives and others
• Some financial MIS subsystems and outputs– Profit/loss and cost systems: profit and revenue
centers– Auditing: internal and external– Uses and management of funds
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27Principles of Information Systems, Eighth EditionFigure 10.7: Overview of a Financial MIS
Financial Management Information Systems (continued)
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28Principles of Information Systems, Eighth Edition
Manufacturing Management Information Systems
• Manufacturing MIS subsystems and outputs monitor and control the flow of materials, products, and services through the organization
• Design and engineering: CAD systems• Master production scheduling and inventory control
– Methods: EOQ, MRP, JIT• Process control
– Techniques: CAM, CIM, FMS• Quality control and testing
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29Principles of Information Systems, Eighth EditionFigure 10.8: Overview of a Manufacturing MIS
Manufacturing Management Information Systems (continued)
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30Principles of Information Systems, Eighth Edition
Marketing Management Information Systems
• Marketing MIS: supports managerial activities in product development, distribution, pricing decisions, and promotional effectiveness
• Subsystems– Marketing research– Product development– Promotion and advertising– Product pricing– Sales analysis
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31Principles of Information Systems, Eighth EditionFigure 10.9: Overview of a Marketing MIS
Marketing Management Information Systems (continued)
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32Principles of Information Systems, Eighth Edition
Marketing Management Information Systems (continued)
Figure 10.10: Reports Generated to Help Marketing Managers Make Good Decisions
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33Principles of Information Systems, Eighth Edition
Human Resource Management Information Systems
• Human resource MIS: concerned with activities related to employees and potential employees
• Subsystems– Human resource planning– Personnel selection and recruiting– Training and skills inventory– Scheduling and job placement– Wage and salary administration– Outplacement
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34Principles of Information Systems, Eighth EditionFigure 10.11: Overview of a Human Resource MIS
Human Resource Management Information Systems (continued)
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35Principles of Information Systems, Eighth Edition
Other Management Information Systems
• Accounting MIS: provides aggregate information on accounts payable, accounts receivable, payroll, and many other applications
• Geographic information system (GIS): capable of assembling, storing, manipulating, and displaying geographic information
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36Principles of Information Systems, Eighth Edition
An Overview of Decision Support Systems
• DSS: organized collection of people, procedures, software, databases, and devices used to help make decisions that solve problems
• Focus of a DSS is on decision-making effectiveness regarding unstructured or semistructured business problems
• Used by managers at all levels
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37Principles of Information Systems, Eighth Edition
Characteristics of a Decision Support System
• Provide rapid access to information• Handle large amounts of data from different
sources• Provide report and presentation flexibility• Offer both textual and graphical orientation• Support drill-down analysis
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38Principles of Information Systems, Eighth Edition
Characteristics of a Decision Support System (continued)
• Perform complex, sophisticated analysis and comparisons using advanced software packages
• Support optimization, satisficing, and heuristic approaches
• What-if analysis: making hypothetical changes to problem data and observing impact on results
• Goal-seeking analysis: determining problem data required for a given result
• Simulation: ability of the DSS to duplicate features of a real system
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39Principles of Information Systems, Eighth Edition
Characteristics of a Decision Support System (continued)
Figure 10.13: With a spreadsheet program, a manager can enter a goal, and the spreadsheet will determine the input needed to achieve the goal.
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40Principles of Information Systems, Eighth Edition
Capabilities of a Decision Support System
• Support problem-solving phases• Support different decision frequencies
– Ad hoc DSS– Institutional DSS
• Support different problem structures– Highly structured problems– Semistructured or unstructured problems
• Support various decision-making levels
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41Principles of Information Systems, Eighth Edition
Figure 10.14: Decision-Making Level
Capabilities of a Decision Support System (continued)
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42Principles of Information Systems, Eighth Edition
A Comparison of DSS and MIS
Table 10.3: Comparison of DSSs and MISs
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43Principles of Information Systems, Eighth Edition
A Comparison of DSS and MIS (continued)
Table 10.3: Comparison of DSSs and MISs (continued)
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44Principles of Information Systems, Eighth Edition
Components of a Decision Support System
• Database• Model base• Dialogue manager: user interface that allows
decision makers to:– Easily access and manipulate the DSS– Use common business terms and phrases
• Access to the Internet, networks, and other computer-based systems
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45Principles of Information Systems, Eighth Edition
Figure 10.15: Conceptual Model of a DSS
Components of a Decision Support System (continued)
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46Principles of Information Systems, Eighth Edition
The Database
• Database management system– Allows managers and decision makers to perform
qualitative analysis on data stored in company’s databases, data warehouses, and data marts
– Can also be used to connect to external databases• Data-driven DSS: primarily performs qualitative
analysis based on the company’s databases
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47Principles of Information Systems, Eighth Edition
The Model Base
• Model base: provides decision makers with access to a variety of models and assists them in decision making– Allows them to perform quantitative analysis on both
internal and external data• Model-driven DSS: primarily performs
mathematical or quantitative analysis• Model management software (MMS): software
that coordinates the use of models in a DSS
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48Principles of Information Systems, Eighth Edition
The User Interface or Dialogue Manager
• Allows users to interact with the DSS to obtain information
• Assists with all aspects of communications between user and hardware and software that constitute the DSS
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49Principles of Information Systems, Eighth Edition
Group Support Systems
• Group support system (GSS)– Consists of most elements in a DSS, plus software
to provide effective support in group decision making– Also called group decision support system or
computerized collaborative work system
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50Principles of Information Systems, Eighth EditionFigure 10.16: Configuration of a GSS
Group Support Systems (continued)
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51Principles of Information Systems, Eighth Edition
Characteristics of a GSS That Enhance Decision Making
• Special design• Ease of use• Flexibility• Decision-making support
– Delphi approach– Brainstorming– Group consensus approach– Nominal group technique
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52Principles of Information Systems, Eighth Edition
Characteristics of a GSS That Enhance Decision Making (continued)
• Anonymous input• Reduction of negative group behavior• Parallel communication• Automated record keeping
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53Principles of Information Systems, Eighth Edition
GSS Software
• Often called groupware or workgroup software• Helps with joint work group scheduling,
communication, and management• Examples
– Virtual Office from Groove Networks– Lotus Notes– Office Communicator– IBM’s Workplace– Microsoft’s NetMeeting
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54Principles of Information Systems, Eighth Edition
GSS Software (continued)
• Examples of groupware products available on the Web– WebEx, Genesys Meeting Center, GoToMeeting
Corporate• GSS software incorporated into existing software
packages
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GSS Alternatives
• Decision room– Decision makers are located in the same building or
geographic area– Decision makers are occasional users of the GSS
approach• Local area decision network
– Group members are located in the same building or geographic area
– Group decision making is frequent
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56Principles of Information Systems, Eighth Edition
Figure 10.18: The GSS Decision Room
GSS Alternatives (continued)
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GSS Alternatives (continued)
• Teleconferencing– Decision frequency is low– Location of group members is distant
• Wide area decision network– Decision frequency is high– Location of group members is distant
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58Principles of Information Systems, Eighth Edition
Executive Support Systems
• Executive support system (ESS):– Specialized DSS– Includes hardware, software, data, procedures, and
people used to assist senior-level executives– Also called an executive information system (EIS)
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59Principles of Information Systems, Eighth Edition
Figure 10.19: The Layers of Executive Decision Making
Executive Support Systems (continued)
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Executive Support Systems in Perspective
• Tailored to individual executives• Easy to use• Drill-down capabilities• Support need for external data
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Executive Support Systems in Perspective (continued)
• Can help with situations that have a high degree of uncertainty
• Future-oriented• Linked to value-added business processes
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62Principles of Information Systems, Eighth Edition
Capabilities of Executive Support Systems
• Support for defining overall vision• Support for strategic planning
– Determining long-term objectives through analysis of current organization and prediction of future trends
• Support for strategic organizing and staffing• Support for strategic control• Support for crisis management
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Summary
• Decision-making phase: includes intelligence, design, and choice stages
• Problem-solving process: includes decision-making phase, and implementation and monitoring stages
• Management information system (MIS): provides managers with information that supports effective decision making and provides feedback on daily operations
• Financial MIS: provides financial information to executives and others
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Summary (continued)
• Manufacturing MIS: monitors and controls flow of materials, products, and services through the organization
• Marketing MIS: supports managerial activities in product development, distribution, pricing decisions, and promotional effectiveness
• Human resource MIS: concerned with activities related to employees and potential employees
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Summary (continued)
• Accounting MIS: provides aggregate information on accounts payable, accounts receivable, payroll, and other applications
• Geographic information system (GIS): capable of assembling, storing, manipulating, and displaying geographic information
• DSS: organized collection of people, procedures, software, databases, and devices used to help make decisions that solve problems
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Summary (continued)
• Group support system (GSS): consists of most elements in a DSS, plus software to provide effective support in group decision making
• Executive support system (ESS): specialized DSS; includes all hardware, software, data, procedures, and people used to assist senior-level executives