Introduction to Is

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Course Coverage

DIS 601: Management Information Systems
A Karwega
akarwega@uonbi.ac.ke akarwega@yahoo.com

Lectures
Meeting Time: Fridays 5:30-8:30 Quizzes 5%

Assignment Project CAT Examination

5% 10% 10% 70% 100%
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Reference Texts
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Foundations of Information Systems – Vladimir Zwass Information Systems for Management – James A O’Brien Computer Programming Concepts and Visual Basic – David I Schneider

01. Introduction to Information Systems

+ Any other text or website with relevant material
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What is an Information System?
An organized set of components for collecting, transmitting, storing and processing data. Aim: To deliver this information for action Many types of IS exist: manual, word-ofmouth, grapevine etc Computer Based information system (CBIS): an information system that uses computer technology to perform some or all of its intended tasks. 5

Data, Information and Knowledge
Data = Raw facts; An elementary description of things, events, activities and transactions that are recorded and stored, but are not organized to convey any specific meaning. Information = data that have been organized so that they have meaning and value to the recipient.

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Data, Information and Knowledge
Knowledge: Data and/or information that have been organized and processed to convey understanding, experience, accumulated learning, and expertise as to apply to a current problem or activity. Processing = Value-adding transformation from one form to the other Has a context

Data Processing
Activities that organize, analyze and manipulate data converting it to information => knowledge etc. Include: Calculating Comparing Sorting; Arranging Classifying Summarizing Filtering; Selecting 7 8

Components of an IS
Hardware: Micros, Minis, mainframes, their peripherals. Software: Programs Telecommunications and Networks: LANs, MANs, WANs Databases: Organized collections of data used by applications software Human Resources: Computer specialists, endusers etc. Procedures: Specifications for use, operation and maintenance of IS collected in help facilities, user manuals, operator manuals 9

Why a Computer Based IS
Perform high-speed, high-volume, numerical computation. Provide fast, accurate, and inexpensive communication within and between organizations. Automate both semiautomatic business processes and manual tasks. Store huge amounts of information in an easyto-access, yet small space. 10

Why a CBIS?
Allow quick and inexpensive access to vast amount of information, worldwide. Facilitate the interpretation of vast amounts of data Enable communication and collaboration anywhere, any time. Increase the effectiveness and efficiency of people working in groups in one place or in several locations, anywhere. Facilitate work in hazardous environment . 11

Types of Information Systems
1. Transaction Processing Systems: Low level IS that handles the repetitive, high volume basic transactions; Typically in ‘number crunching’ applications Merchandise sale Airline ticket reservation Credit card purchase

May operate either in batch mode or online mode
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Types of Information Systems Types of Information Systems
2. Management Reporting Systems: These provide routine information to managers Internally focused; They report on the past & present Tend to produce voluminous reports leading to management problems => managers have come to prefer demand or exception reporting 3. Decision Support Systems Expressly developed to support the decision making process System facilitates dialog between user (who’s considering alternative solutions) and the system (that provides built-in models and access to the databases) What-If Scenarios Goal Seek Scenarios

Work best when augmented with the judgment supplied by a manager 13 14

Types of Information Systems
4. Executive Information Systems Provide direct support for top managers by making a variety of internal and external...
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