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Fundamental Concept of Information System

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LECTURE 1 Fundamental Concepts of Information Systems

Learning Objectives








Understand the concept of a system and how it relates to information systems Explain major components of an information system Present major types of information systems in the business world Explain how a firm can use IT to gain competitive advantages

What is a system?


A system
  



Is a set of interrelated components With a clearly defined boundary Working together to achieve a common set of objectives By accepting inputs and producing outputs in a transformation process A computer, an organization



Example:


What is an Information System?


An organized combination of…
    

People Hardware and software Communication networks Data resources Policies and procedures Collects, processes, stores, and disseminates information in an organization



This system…


Information systems model

Components of an IS


People Resources




End users: the people who use the IS or the information from the IS IS specialists: the people who develop and operate IS All physical devices used in information processing Machines, data media, peripherals All information processing instructions including programs and procedures System software, application software and procedures



Hardware Resources
 



Software Resources




Components of an IS (cont.)


Data Resources
  

Facts about the business transactions Processed and organized information Databases of organized data Communications media Network infrastructure: hardware and software The Internet, intranets and extranets



Network Resources
  

Functions of an Information System

IS Activities


Input of data resources


Data entry activities E.g. calculate, compare, sort, classify, summarize Messages, reports,...

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