Introduction to Information Systems in Business (Outline)

Introduction to Information Systems in Business

1.1. Introduction

1.2. What is an information system?

1.3. Why study information systems and information technology?

  • An end user perspective, and
  • An enterprise perspective

1.4. What managerial end users need to know?

            a.         Foundation Concepts              b. Technology             c. Applications

d.         Development   e. management

1.5. Roles of information systems and information technology in business

  • Support of business operations.
  • Support of managerial decision making.
  • Support of strategic competitive advantage.

1.6. Benefits of use network computers

a. Marketing    b. Distribution c. Field Service           d. Transportation

e. Financial Services    f. Wholesale Sales       g. Retail Sales             h. Insurance

 

Data and Information

2.1. Data and Information

2.2. Difference between Data and Information

2.3. Qualities of a Good Information

  1. Time Dimension
  2. Timeliness         b. Currency     c. Frequency    d. Time Period
  3. Content Dimension, and
  4. Form Dimension
  1.  Accuracy        b. Relevance    c. Completeness                      d. Conciseness e. Scope
  2. f. Performance

a. Clarity     b. Detail                      c. Order                       d. Presentation                        e. Media

2.4.  The Process of Converting Data into Information

•           Collection

•           Classification

•           Sorting, adding, merging, and so on

•           Summarizing

•           Storing

•           Retrieval

•           Dissemination

 

 

 

 

2.5. Information Systems and Organizational Structure

a. Pyramid or Hierarchical structure.

E  Top level or Top management

E  Middle level or Middle management

E  Lower level or Lower management

b. Task-based structure.

Information Systems

3.1. System Concepts

3.2. Information Systems

3.3. Information Technology

IT consists of:

  • Computer hardware
  • Software
  • Database and
  • Telecommunication.

3.4. Differences between Information System and Information Technology

3.5. Activities of an Information System

  1. Input
  2. Processing
  3. Output
  4. Storage, and
  5. Control

3.6. Information System Resources

  1. People
  2. Hardware
  3. Software
  4. Data, and
  5. Networks

3.7. Why Organization Need Information Systems?

  1. Meeting Global Challenges
  2. Capturing Opportunities in the Marketplace
  3. Supporting Corporate Strategy
  4. Linking Departments whose Functions are Different
  5. Enhancing Worker Productivity
  6. Enhance Decision Making
  7. Improve Team Collaboration
  8. Create Business Partnership and Alliances
  9. Enable Global Reach
  10. Increasing the Quality of Goods and Services

3.8. Potential Risks of Information Systems

  1. “Deskilling” of Workers
  2. Information Overload
  3. Employee Mistrust
  4. Disenchantment with Information Systems
  5. Challenges in Developing Information Systems
  6. Security Breaches

3.9. CLASSIFICATIONS OF INFORMATION SYSTEMS

a) OPERATION SUPPORT SYSTEM

  1. Transaction Processing System
  2. Process Control System
  3. Office Automation System

b) MANAGEMENT SUPPORT SYSTEM

  1. Management Information system
  2. Decision Support System
  3. Executive Information system

Developing Information Systems

4.1. A SYSTEM APPROACH TO PROBLEM SOLVING

4.2. DEVELOPING INFORMATION SYSTEMS

The System Development Cycle (SDLC)

(i) investigation

a. Information Systems Planning

b. Feasibility Studies

·            organizational feasibility

·            Economic feasibility

·            Technical feasibility

·            operational feasibility

(ii) analysis

  1. Organizational Analysis
  2. Analysis of the Present System
  3. Functional Requirements Analysis

 (iii) design

a. User Interface, Data, and Process Design

E  User Interface Design

E  Data Design

E  Process Design

b. System Specifications

(iv) implementation, and

(v) maintenance.

            TELECOMMUNICATIONS

5.1. TELECOMMUNICATIONS

5.2. INFORMATION SUPERHIGHWAY

5.3. COMPONENTS OF A TELECOMMUNICATIONS NETWORK/A TELECOMMUNICATIONS NETWORK MODEL (more details)

  1. Computers to process information
  2. Terminals or any input/output devices that sends and receives data
  3. Communication channels, the links by which data or voice are transmitted between sending and receiving devices in a network.
  4. Communication processors such as modems, multiplexer, controller, and front-end processor which provide support functions for data transmissions and receptions.
  5. Communication software which control input and output activities and manages other functions of the communication networks

5.4. FUNCTIONS OF A TELECOMMUNICATIONS SYSTEM

5.5. NETWORK PROTOCOL

a. IP    b. TCP

5.6. TYPES OF TELECOMMUNICATIONS SIGNAL 

(a) An analog signal    (b) A digital signal

5.7. COMMUNICATION CHANNEL /MEDIA

a. Twisted-Pair Wire b. Coaxial Cable c. Fiber optic cable d. Terrestrial Microwave e. Wireless transmissions

5.8. COMMUNICATIONS CHANNEL CHARACTERISTICS

a. Transmission Speed             b. Transmission Mode c. Transmission Direction

5.9. TYPES OF TELECOMMUNICATIONS NETWORK

a. Private Branch Exchange (PBX)    b. Local Area Networks          c. Wide Area Networks

d. Value Added Networks

5.10. BUSINESS VALUE OF TELECOMMUNICATIONS

 

Database Design and Management

6.1 Concept of Database

6.2  Data Hierarchy

  1. Bits            ii. Bytes           iii. Fields         iv. Records      v. Files, and     vi. Databases

6.3. Methods of Organizing Data in Files

  1.                     i.            Sequential file organization
  2.                   ii.            Direct or Random file organization
  3.                 iii.            Indexed sequential file organization

6.4. Data Base Management Systems

6.5. Components of a Database Management Systems

  1.                     i.            Data Definition Language (DDI)
  2.                   ii.            Data Manipulation Language (DML)
  3.                 iii.            Data Dictionary

6.6. Models of Database

  1.         i.            Hierarchical Model
  2.       ii.            Network Model, and
  3.     iii.            Relational Model

6.7. Database Trends

Online Analytical Processing (OLAP)

Data Warehouses

Data Mining

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