DISTRIBUTED WEB BASED APPLICATION

J SivakumarM.Tech CSE

OUTLINE

• Web Architecture• Web Documents• Web Services• Web Server(Apache)

What is Web/WWW?

• The World Wide Web (WWW or W3 and commonly known as the Web) is a system of interlinked hypertext documents accessed via the Internet.

• With a web browser, one can view web pages that may contain text, images, videos, and other multimedia and navigate between them via hyperlinks.

• Now we are using WEB2.0

Web Architecture

HTTPHTTP

Web Documents

• Web Documents are generally written in markup languages.

• Markup languages are designed for the processing, definition and presentation of text.

• The language specifies code for formatting, both the layout and style, within a text file.

• The code used to specify the formatting are called tags.• HTML and XML is a an example of a widely known and

used markup language.

HTML

• HTML you can create your own Web site.• HTML is not a programming language, it is a markup

language• A markup language is a set of markup tags • HTML uses markup tags to describe web pages

XML

• XML stands for eXtensible Markup Language.• XML is designed to transport and store data.• XML is a markup language much like HTML• XML was designed to carry data, not to display data• XML tags are not predefined. You must define your own tags• XML is designed to be self-descriptive• XML is a W3C Recommendation

Web Services• Web Services can convert your application into a Web-

application, which can publish its function or message to the rest of the world.

• Web services are application components.• Web services communicate using open protocols.• Web services are self-contained and self-describing.• Web services can be discovered using UDDI.• Web services can be used by other applications.• XML is the basis for Web services.

Remote Access VPNWeb service elements are:• SOAP (Simple Object Access Protocol)• UDDI (Universal Description, Discovery and Integration)• WSDL (Web Services Description Language)

Web Server(Apache)• A process that runs on a host that relays information to a

client upon the client sending it a request.• A host computer on a network that holds information (eg,

Web sites) and responds to requests for information.• Apache is web server software notable for playing a key role

in the initial growth of the World Wide Web.• Apache is a open source server.

Apache web Server

How does internet works?

Click Here

Queries :

Thank you All !

jpsivas@yahoo.co.in(www.sastra.edu)