In this week session, I learnt about Information System. Information System is a set of elements of component, eg. Input,Processing , Output. Also, CB Information is a combination of hardware , software,telecommunication networks that people build and use to collect, create, distribute,data or information. Below is a diagram of basic system model.
CBIS is used in an organization to support business operation, support competitive advantage and also to make a business decision.Furthermore, there are three types of Information needed in an organization namely: Strategic, Tactical and Operational. Below is a diagram to illustrate how it is used.
The components of CBIS include procedure, Telecommunications, database, Software, hardware, people etc. hence the components of Information hardware are Input device, processing device,output device, storage device. The storage holds data, instructions, and Information for future reference. The categories of software are system software, Application software and programming language. A programming language is a set of words,abbreviation,and symbols that enables a programmer to communicate instructions to a computer. This includes COBOL,etc. Moreover, an IS database is an organized collection of interrelated data(records).The TPS is the backbone of an organization's information system.TPS components involves people,the user, participants, hardware and software.
The types of information system include TPS,MIS,DISS,ESS/EIS. Actually,ISD or System Development is a process of defining, designing,testing and implementing a new software application or program. ISD methodologies is a collection of procedures,techniques,tools and documentation aids which will help the system developers in their efforts to implement a new information system.There are also three types of ISD methodologies namely SDLC,Prototyping and Stradis. The SDLC stages involves system investigation,system analyst,system design,system implementation and system maintenance and review. Finally, the stages in STRADIS are design study,designing alternatives, physical design and implement system.
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