What is information system

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What is a System ?

It is a collection of interrelated components that work together to perform specific task.

Ex. Human bodyBusiness OrganizationA computer

DATA

Data is a collection of facts, figures and statistics related to an object. Data

can be processed to create useful information.

INFORMATION

InformationThe manipulated and processed form of

data is called information. It is more meaningful than data. It is used for

making decisions. Data is used as input for processing and information is the

output of this processing.

INFORMATION SYSTEM

is a combination of people, hardware, software, communication devices, network and data resources that

processes (can be storing, retrieving, transforming information) data and information for a specific purpose.

INFORMATION TECHNOLOGY

is a branch of engineering dealing with the use of computers and telecommunications equipment to store, retrieve, transmit and

manipulate data. set of methods or techniques for acquiring,

organizing, storing, manipulating, and transmitting information.

CAPABILITIES OF IS

INPUT,PROCESS,OUTPUT,FEEDBACK

INPUT is the activity of gathering and capturing raw data

PROCESSING converting or transforming useful data into outputs.

OUTPUT producing useful information, usually in the form of documents and reports.

FEEDBACK is information from the system that is used to make changes to input or processing activities.

MANUAL BASED IS

A system which does not use any computer devices. Manual is using old method

without the help of the technology or maybe less to perform certain task or work. File storage devices, manual procedures and

papers are examples of components of a manual information system.

COMPUTER BASED IS

Involves five interdependent components Hardware ( machines ) Software ( instruction or program ) People ( managers, programmers and users) Procedures ( Rules ) Data & Information

an information system is an organized combination of people, hardware, software, communication networks and the data resources that collects, transforms and disseminates information in a organization

Integrated information systems share a common database..

function-based information system system is designed for the exclusive support of a specific application area.

What are the benefits of using IS ?

central accesseasy backupcentral distribution of informationeasy record-keepingeasy tax preparationeasy customer trait identification

KNOWLEDGE BASED IS• software that uses artificial

intelligence or expert system techniques in problem solving processes. it incorporates a store (database) of expert knowledge with couplings and linkages designed to facilitate its retrieval in response to specific queries, or to transfer expertise from one domain of knowledge to another.

TYPES OF IS

TRANSACTION-PROCESSING SYSTEMS (TPS)

is type of information system that collects, stores, modifies and retrieves data transaction of an

enterprise.

FEATURES :• Rapid response – fast performance with rapid result.• Reliability – well designed back up and recovery

with a low failure rate• Inflexibility – treat every transaction quality. It may

be used many times each day which means iy has to be precise and flexible

• Controlled processing – maintain specific requirements for the roles and responsibilities of different employees.