Cis(11122223333)

STRUCTURAL AND FUNCTIONAL

FEATURES OF CIS

Supervisor prof. İlky salihoglu

By

zaid da’ood

WHAT IS INFORMATION SYSTEM ?

A combination of hardware,

software, infrastructure and

trained personnel organized

to facilitate planning, control,

coordination, and decision making in an organization.

FIRST INFORMATION SYSTEM

IN HUMAN’S HISTORY• We are all having this system

already and human starting go

forward to technology.

• writing ,reading, computing, and

memorizing all information result of

these processes.

• then human reaching to computer and

use it to do most of the processes that

information system need.

COMPUTER INFORMATION SYSTEM

Information systems are computer-based infrastructures ,

organizations, personnel, and components that collect,

process, store, transmit, display, disseminate, and act on

information. Information systems generally provide

computer-based assistance to people engaging their

environment.

INFORMATION INFRASTRUCTURE

Everything that supports information processing except information

itself:

computer hardware

general-purpose software

networks and communication

facilities.

INFORMATION INFRASTRUCTURE

database

information management

personnel

and, procedures

INFORMATION ARCHITECTURE

is a general scheme of

the Information

requirements

in the organization

(including information

flows)

CENTRALIZED INFORMATION ARCHITECTURE

Input transactions do not

need to be processed

in real time.

On-line-data-entry personal

can be centrally located.

Large number of periodic

outputs are produced by the system.

CENTRALIZED INFORMATION ARCHITECTURE

Single-computer architecture

Mainframe environment;

PC environment

Multi-computer architecture

Group of similar computers

Group of different computers

implementing different tasks.

DECENTRALIZED (DISTRIBUTED) INFORMATION

ARCHITECTURE

PC in a LAN or WAN

Client/Server

Client/Server in a LAN

Enterprise wide computing

Client/Server evolution

into Internet-based architecture

CLIENT/SERVER ARCHITECTURE

Several computers share resources and are able to communicate with each other

A client - a computer attached to the

network, which is used to request and

access shared network resources

A server - a machine that is

attached to the same network and

provides clients with these services

Purpose : optimize the use of computer resources

ENTERPRISE WIDE ARCHITECTURES

It is broadly used to describe business initiatives and technology; for example,

an "enterprise-wide focus

upon customer satisfaction

," or an "enterprise-wide

security application.

" These are more often

company-wide ,restricted to a

company's employees and internal workings.

ENTERPRISE WIDE ARCHITECTURES

Access to data, applications, services, and real-time flows of data in

Different LANs or databases

Use client/server architecture

to create a cohesive, flexible,

and powerful computing

environment

ENTERPRISE WIDE ARCHITECTURES

Provide total integration of departmental and

corporate IS resources

Increase the availability of information and

thereby maximize the

value of information.

THE EVOLUTION

1940 Scientific, military applications

1950 Routine business applications, TPS

1960 MIS, office automation

1970 DSS, LANs

1980Client/server executive information system,

PC’s, AI, Groupware

1990Integration, intelligent systems

the Web, intranets, extranets, ERP software

2000 Internet, Electronic commerce, Smart systems

Computer Based Information Systems

CONCLUSIONS:

All information systems nowadays can not work without computers in each

of its functions therefore is necessary developing information science and

deal with it and managing it and develop the structural, efficiency and

functionality of a computer for using in information systems in addition to

the development of how to deal with the information and data input, output

and efficiency to deal with them through user and dealing with it through the

development of the computer internally ,and reduce errors to make

computer systems more efficient in the constructional and functional

features.

References:

1-Computer-Aided Analysis and Design of Information Systems J.F. Nunamaker Jr. and Benn R. Konsynski

Jr.University of Arizona Thomas Ho and Carl Singer Purdue University.

2-Computer and Information Systems Policy of The Baptist College of Florida.

3-The Protection of Information in Computer Systems JEROME H. SALTZER, SENIOR MEMBER, IEEE, AND

MICHAEL D. SCHROEDER, MEMBER, IEEE.

4-UNDERSTANDING COMPUTERS: AN OVERVIEW FOR RECORDS AND ARCHIVES STAFF MANAGING PUBLIC

SECTOR RECORDS

A STUDY PROGRAMME General Editor, Michael Roper; Managing Editor, Laura Millar .

5- A Functional Taxonomy of Computer Based Information Systems Gregory Mentzas Department of

Electrical and Computer Engineering National Technical University of Athens Published in: "International

Journal of Information Management" (Volume 14, No. 6, December, pp. 397-410.) .

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