Avoid ambiguity – include as many activities as required to avoid ambiguity o Information system: System – Group of components interacting to achieve a purpose Information systems – a system that interacts to produce information Information: knowledge derived from data information is processed data presented in a meaningful context 5 components of an information system o Hardware o Software o Data o Procedures o People The 5-component model makes it easier to troubleshoot issues when they arise.
o Allows you to think more completely and assess the impact of new technologies – better able to assess the scope of new systems o Lists components in a particular order – in order of ease of change and extent of organizational disruption – i.e. it’s easier and less disruptive to replace a computer with a new one than it is to replace a person o Summary of Business Process Model and Notation Symbol o Example: o o o o o o o o o o o
o 4 distinct roles – 3 performed by a person, only 1 (order tracker) performed by computer-based system o based on this we can say that this process is supported by a single Information System – Order tracker IS o An information system can support several processes o For example, the Order tracker can also support Drive-Thru, In-store ordering, accounting total sales, reorder items o An information system will have a different procedure for each process it supports. Should the information system change, or the process change, the procedures will also change accordingly o Structured vs. Dynamic Processes o Structure Processes : formal activities that don’t change from day-to-day Ex: making coffee at Tim Horton’s – one way of doing it properly o Dynamic processes : Informal activities that aren’t always done the same way Ex: a sales rep at future shop – experience differs depending on customer needs o Data vs Information: o Data : recorded facts and figures - Ex : number of houses on a street, number of tickets sold 5 Necessary Data characteristics Accurate - must be able to rely on what comes out of systems Timely – need it in a timely fashion to make decision Relevant – To context/subject – must be usable for the decision at hand Just sufficient – you need enough to make proper decision Worth its cost – data is expensive so the benefit must outweigh the cost o Information: the knowledge we gain from interpreting those facts (data) – provides meaning When you sort, process, or interpret data, it becomes information – becomes meaningful The meaning of information differs from one person to the next Ex: 25 degrees outside is hot for me, but might be just right for you o Data vs. Information examples: o Fundamental Types of Processes in Organizations Structured Dynamic Limitations Many – there’s only one way of doing things Few – more relaxed Innovation Not necessary Very necessary Control Procedures are enforced by the company Must adapt as you go Efficiency Very important – save time & money Less important, more strategic
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- Spring '11