 Client – Server Technology |
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A Basic
Introduction
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M.JEHAN
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 Client Server Architecture |
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• A network
architecture in which
each computer or
process on the
network is either a
client or a server.
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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2
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 Components |
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• Clients
• Servers
• Communication
Networks
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Server
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Client
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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3
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 Clients |
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• Applications
that run on computers
• Rely on
servers for
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– Files
– Devices
– Processing
power
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Clients are Applications
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• Example:
E-mail client
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– An application
that enables you to send
and receive e-mail
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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4
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 Servers |
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• Computers
or processes that manage
network resources
Servers Manage
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– Disk drives (file servers)Resources
– Printers (print servers)
– Network traffic (network
servers)
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– A computer
system that processes
database queries
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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5
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• Example:
Database Server
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 Communication Networks |
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Networks Connect
Clients and
Servers
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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6
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 Client–Server Computing |
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• Process
takes place
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– on the
server and
– on the
client
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Client-Server
Computing Optimizes
Computing Resources
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• Servers
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– Store
and protect data
– Process
requests from clients
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• Clients
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– Make requests
– Format
data on the desktop
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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7
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 Application Functions |
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• Software
application
functions are separated
into three distinct parts
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Server:
Data Management
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Client:
Presentation & Application Logic
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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8
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 Application Components |
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3 Data Management
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2
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1
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Application
Logic
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Presentation
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3 Logical Tiers
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Thin
Client
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2 Client Types
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Fat
Client
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Database
Applications:
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Most common
use of client-server architectures
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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9
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 Middleware |
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• Software
that connects two
otherwise separate applications
Database
Server:
• Example:
Middleware productManages Data
linking
a database system to a
Web serverMiddleware Links
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Applications
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Web Server:
Presents Dynamic Pages
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Client:
Requests Data via Web
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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10
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 Types of Servers |
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From A to Z
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•
•
•
•
•
•
•
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Application
Servers
Audio/Video
Servers
Chat Servers
Fax Servers
FTP Servers
Groupware
Servers
Web Servers
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•
•
•
•
•
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List Servers
Mail Servers
News Servers
Proxy Servers
Telnet Servers
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Source:
http://webopedia.lycos.com
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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11
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 Thanks! |
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M.JEHAN
Dept.
of Comp. Sci.,
DJAME
COIMBATORE
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NOV-2010
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D.J.Academy
For Managerial
Excellence
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12
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