Components of a Basic Web System

Host with Web Server

and attached CGI Script

in Perl or Java

Perhaps linking to a Backend

service such as a database

or digital video server

Host holds HTML files

typically stored in a

UNIX/Windows NT

file system but could also

be in a database such as

Oracle or Microsoft Access

Network trying to

provide Quality of

Service

and using

compression

to make better

use of available

bandwidth

Client with a Web

Browser displaying

“simple” HTML Text

and Images obtained

from host.

Client runs JavaScript

(from HTML documents)

and Java Interpreters

(acting on downloaded

JavaVM bytecodes)

Java and JavaScript

give general dynamic

behavior

Backend

Service

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