MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 1 An Introduction to Information...
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Transcript of MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 1 An Introduction to Information...
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 1
An Introduction to Information Systems
Chapter 1
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 2
Principles and Learning Objectives
• The value of information is directly linked to how it helps decision makers achieve the organization’s goals.
– Distinguish data from information and describe the characteristics used to evaluate the quality of data.
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 3
Principles and Learning Objectives
• Models, computers, and information systems are constantly making it possible for organizations to improve the way they conduct business.
– Name the components of an information system and describe several system characteristics.
– Identify four basic types of models and explain how they are used.
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 4
Principles and Learning Objectives
• Knowing the potential impact of information systems and having the ability to put this knowledge to work can result in a successful personal career, organizations that reach their goals, and a society with a higher quality of life.
– Identify the basic types of business information systems and discuss who uses them, how they are used, and what kinds of benefits they deliver.
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 5
Principles and Learning Objectives
• System users, business managers, and information systems professionals must work together to build a successful information system.
– Identify the major steps of the systems development process and state the goal of each.
– Discuss why it is important to study and understand information systems.
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 6
Information Concepts
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 7
Information System
A set of interrelated components that collect, manipulate, and disseminate data and information, and provide feedback to meet an objective
• Examples: ATMs, airline reservation systems, course reservation systems
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 8
Data vs. Information
• Data: raw facts
• Information: collection of facts organized in such a way that they have value beyond the facts themselves
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 9
Types of Data
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 10
Data vs. Information
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 11
The Characteristics of Valuable Information
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 12
The Characteristics of Valuable Information
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 13
The Characteristics of Valuable Information
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 14
System and Modeling Concepts
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 15
System
A set of elements or components that interact to accomplish goals
• Input • Processing mechanism• Feedback• Output• System boundary
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 16
Components of a System
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 17
System and Modeling Concepts
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 18
System Performance and Standards
• Efficiency: output/input• Effectiveness: extent to which system attains its
goals• Performance standard: specific objective of a
system
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 19
System Variables and Parameters
• System variable - item controlled by decision-maker
• System parameter - value that cannot be controlled
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 20
Systems Classification
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 21
System Performance and Standards
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 22
Modeling a System
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 23
Modeling a System
• A model is an abstraction that is used to represent reality– 4 major types of models
• A narrative model is based on words– Logical, not physical
• A physical model is tangible• A schematic model is a graphic representation
– Graphs and charts
• A mathematical model is an arithmetic representation
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 24
What Is An Information System?
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 25
Components of an Information System
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 26
Computer-Based Information Systems (CBIS)
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 27
Components of a CBIS
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 28
Telecommunications, Networks, and the Internet
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 29
Telecommunications, Networks, and the Internet
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 30
Business Information Systems
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 31
Business Information Systems
• Electronic Commerce• Transaction Processing Systems• Management Information Systems• Decision Support Systems
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 32
E-Commerce
• Business-to-business• Business-to-consumer• Business-to-government• Government-to-consumer
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 33
Electronic Commerce
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 34
Transaction Processing Systems
A transaction processing system (TPS) is an organized collection of people, procedures, software, databases, and devices used to record completed business transactions.
• Process business exchanges• Maintain records about the exchanges• Handle routine, yet critical, tasks• Perform simple calculations
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 35
Payroll Transaction ProcessingSystem
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 36
Enterprise Resource Planning (ERP)
• Integrated programs that can manage a company’s entire set of business operations
• Often coordinate planning, inventory control, production, and ordering
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 37
Management Information Systems (MIS)
• Routine information for routine decisions• Operational efficiency• Use transaction data as main input• Databases integrate MIS in different functional
areas
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 38
Management Information Systems (MIS)
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 39
MIS Outputs
• Scheduled reports• Demand reports• Exception reports
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 40
Decision Support Systems (DSS)
• DSS- A decision support system is an organized collection of people, procedures, software, databases, and devices used to support problem-specific decision making.
– Interactive support for non-routine decisions or problems
– End-users are more involved in creating a DSS than an MIS
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 41
Essential DSS Elements
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 42
Special-Purpose Business Information Systems
• Artificial Intelligence (AI) Systems• Virtual Reality Systems • Expert Systems• Other Special-Purpose Business Information
Systems
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 43
The Major Elements of Artificial Intelligence
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 44
Virtual Reality
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 45
Data Glove
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 46
Systems Development
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 47
Why Learn About Information Systems?
• Advance in your career• Solve problems• Realize opportunities• Meet your career goals
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 48
Computer and Information System Literacy
• Computer literacy - knowledge of computer systems and equipment
• Information system literacy - knowledge of how data and information are used
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 49
Information Systems in Functional Areas of Business
• Finance and Accounting• Sales and Marketing• Manufacturing
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 50
Information Systems in Industry
• Investment firms• Banks• Publishing companies• Healthcare organizations• Management consulting firms
MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan 51
Summary
• Data - raw facts• Information - data transformed into a
meaningful form • System - set of elements that interact to
accomplish a goal • Systems development - creating or modifying
existing business systems