System Development

In: Computers and Technology

Submitted By allnillin
Words 671
Pages 3
Information System Development.

Information system is a collection of hardware, software, and procedures work together to produce Quality Information.

Information system MUST meet the requirements of the SYSTEM USER.

SYSTEM DEVELOPMENT is a set of activities that you need to develop an INFORMATION SYSTEM.

There are many types of information systems;

Ø Office information system; is an information system that lets employees perform tasks electronically using computer and electronic devices instead of manual systems.

Ø Transaction processing system; is an information system that captures and processes data generated during an organisations day to day activities.

Ø Management information system; while computers were ideal for routine transaction processing, managers soon realized that the computers’ capability of performing rapid calculations and data comparisons could produce meaningful information for management.

Ø Decision support systems; Transaction processing and management information systems provide information on a regular basis. Frequently, however, users need information not provided in these reports to help them make decisions. A sales manager, for example, might need to determine how high to set yearly sales quotas based on increased sales and lowered product costs. Decision support systems help provide information to support such decisions.

Ø Expert systems; An expert system is an information system that captures and stores the knowledge of human experts and then imitates human reasoning and decision-making processes for those who have less expertise. Expert systems are composed of two main components: a knowledge base and inference rules. A knowledge base is the combined subject knowledge and experiences of the human experts. The inference rules are a set of logical judgments applied to the knowledge base each time a…...

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