Abstract :
Client-server
architecture, architecture of a computer network in which many clients (remote processors)
request and receive service from a centralized server (host computer). Client computers
provide an interface to allow a computer user to request services of the server
and to display the results the server returns. Servers wait for requests to arrive
from clients and then respond to them.
Ideally, a
server provides a standardized transparent interface to clients so that clients
need not be aware of the specifics of the system (i.e., the hardware and software)
that is providing the service. Clients are often situated at workstations or on
personal computers, while servers are located elsewhere on the network, usually
on more powerful machines. This computing model is especially effective when clients
and the server each have distinct tasks that they routinely perform.
In hospital
data processing, for example, a client computer can be running an application program
for entering patient information while the server computer is running another program
that manages the database in which the information is permanently stored. Many clients
can access the server’s information simultaneously, and, at the same time, a client
computer can perform other tasks, such as sending e-mail.
Because both
client and server computers are considered intelligent devices, the client-server
model is completely different from the old “mainframe” model, in which a centralized
mainframe computer performed all the tasks for its associated “dumb” terminals.
The Purpose
of Client/Server Architecture
We are in an
era where information technology plays a critical role in business applications,
considered as an area an organization would highly invest in order to widen the
opportunities available to compete the global market. “A competitive global economy
will ensure obsolescence and obscurity to those who cannot or are unwilling to compete”(Client/Server Architecture,2011),
according to this statement it’s necessary for organizations
sustain its market
position by re- engineering
prevailing organizational structures and business practices to achieve their business
goals. In short it’s
a basic need to evolve
with the change of technological
aspects.
Therefore organizations
should undergo a mechanism to retrieve and process its corporate data to make business
procedures more efficient to excel or to survive in the global market. The client/server model brings
out a logical perspective of distributed corporative processing where a server handles
and processes all client requests. This can be also viewed
as a revolutionary
milestone to the data processing industry.
“Client/server
computing is the most effective source for the tools that empower employees with
authority and responsibility.”(Client/Server Architecture,2011) “Workstation
power, workgroup empowerment, preservation of existing investments, remote network
management, and market-driven business are
the forces creating
the need for client/server computing”.
(Client/Server Architecture,2011) Client/server
computing has a vast progression in the computer industry leaving any area or corner
untouched. Often hybrid skills are required for the development of client/server applications including
database design, transaction processing, communication skills, graphical
user interface design and development etc. Advanced applications require expertise of distributed objects and component
infrastructures.
Most commonly found client/server strategy today is PC LAN implementation optimized for the usage of group/batch. This has basically given threshold to many new distributed enterprises as it eliminates host-centric computing.
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