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Information systems in context

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greg robertson
greg robertson
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Information Systems In Context
Environment Information System Information Processes Participants Data / Information Information Technology Main Components of an information system ,[object Object],[object Object],[object Object],boundary Users
Environment
Environment Information System ENVIRONMENT Definition : The environment is everything that influences, and is influenced by, the information system and its purpose. Description : The information system has an impact on the environment, and in turn, the environment has an impact on the information system.
Environment Information System Boundary Definition : The boundary defines what is the information system and what is the environment. Description : The information system may have to use features that belong to the environment, which the information system can not change.
Environment Information System Main Components of an information system PURPOSE Definition : The purpose is the reason(s) for the creation and existence of the information system. Description : There are a lot of reasons for the development of information systems (e.g. a need for a list of all the food requirements for animals in a zoo). ,[object Object],[object Object],[object Object]
Main Components of an information system INFORMATION SYSTEM Definition : A group of elements that work together. It is created to achieve the purpose. It operates in a particular environment. Description : An information system performs a set of processes that require: participants, data or information and information technology. Note : There are also other systems such as the natural systems (water cycle). Users Environment Information System Information Processes Participants Data / Information Information Technology ,[object Object],[object Object],[object Object]
Main Components of an information system INFORMATION PROCESSES Definition : These are the processes of collecting, organising, analysing, storing and retrieving, processing, transmitting and receiving and displaying. Description : Information processes involve both computer and non-computer activities carried out to develop and maintain an information system. Note : Can also be non-computer processes. Users Environment Information System Information Processes Participants Data / Information Information Technology ,[object Object],[object Object],[object Object]
Main Components of an information system RESOURCES PARTICIPANTS Definition : These are the people who carry out the processes within the information system. Description : Participants are the users of the information system who play a direct or indirect role in the development and use of the system. Resources Users Environment Information System Information Processes Participants Data / Information Information Technology ,[object Object],[object Object],[object Object]
Main Components of an information system RESOURCES DATA / INFORMATION Definition : Data is the raw material that information processes deal with, information is the output from that data once it has been processed and given meaning by people. Description : Data can take many forms such as graphics, audio, video, text or numbers and its use will be determined by the purpose of the information system. Resources Users Environment Information System Information Processes Participants Data / Information Information Technology ,[object Object],[object Object],[object Object]
Main Components of an information system RESOURCES INFORMATION TECHNOLOGY Definition : This is the hardware and software used in information processes. Description : Hardware will not operate without software. Resources Users Environment Information System Information Processes Participants Data / Information Information Technology ,[object Object],[object Object],[object Object]
Main Components of an information system Users Definition : Users are people who view the output from an information system. Description : A user may utilise the services of a bank from an ATM Resources Users Environment Information System Information Processes Participants Data / Information Information Technology ,[object Object],[object Object],[object Object]
Main Components of an information system Note : Arrows indicate the interacting relationship of the components. Changes of one affects the other associated components. Resources Users Environment Information System Information Processes Participants Data / Information Information Technology ,[object Object],[object Object],[object Object]
Environment Information System Information Processes Participants Data / Information Information Technology Main Components of an information system ,[object Object],[object Object],[object Object],Resources Users

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Information systems in context

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  • 4. Environment Information System ENVIRONMENT Definition : The environment is everything that influences, and is influenced by, the information system and its purpose. Description : The information system has an impact on the environment, and in turn, the environment has an impact on the information system.
  • 5. Environment Information System Boundary Definition : The boundary defines what is the information system and what is the environment. Description : The information system may have to use features that belong to the environment, which the information system can not change.
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