w3schools    w3Schools
Search W3Schools :
HOME HTML CSS XML JAVASCRIPT ASP PHP SQL MORE...   References Examples Forum About

XML Certification
Download XML editor
Custom Programming
Table of contents
Semantic Web
Semweb HOME
Semweb Example
Semweb Security

Selected Reading
Web Statistics
Web Glossary
Web Hosting
Web Quality

W3Schools Tutorials
W3Schools Forum

Helping W3Schools


Semantic Web Example

Previous Next

The Semantic Web. A simple example application.

Buying And Selling Used Cars

Suppose a semantic web system was built to administer the selling and buying of used cars over the Internet.

The system would contain two main applications:

  • One for people who wanted to buy a car
  • One for people who wanted to put up a car for sale

Let's call the Internet applications for IBA (I Buy Application), and ISA (I Sell Application).

IBA - The I Buy Application

People who want to buy a car could use an IBA application much like this:

I Buy Application (IBA)

In a "real live" application you would be asked to identify yourself the first time you used it. Your ID would be stored in an RDF (Resource Description Framework) file. Your ID would identify you as a person with name, address, email, and ID number.

When you submitted the query, the application would return a list of cars for sale, and the list could be drilled down and sorted by year, price, location and availability. This information would be returned from a web spider continuously searching the web for RDF files.

ISA - The I Sell Application

People who want to sell a car could use an ISA application much like this:

I Sell Application (ISA)

When you submitted the form, the application would ask you for more information and store your ID and the information in an RDF file made available to the web.

The RDF file would contain information like:

Your ID: Name, address, email, ID number.
Your selling item: type, model, picture, price, description.

Behind The Scene

Behind the scene the "ISA" application creates an RDF file with a lot of RDF pointers.

It creates an RDF pointer to a file with information about your person, an RDF pointer to information about Volvo and Volvo models, an RDF pointer to Volvo dealers and resellers, about parts, about prices, and much more.

An RDF pointer is a pointer (actually an URL) to information about things (like a knowledge database).

The beauty about this is that you don't have to describe yourself, or the car model. The RDF application will sort it out for you.

Will It Ever Work?

Chaos? Standards? What do we need? What are we waiting for?

A standard by W3C, by Microsoft, by Google?

RDF is data about web data - or metadata. Often RDF files describe other RDF files. Will it ever be possible to link all these RDF files together and build a semantic web?

No one knows, but someone will try.

Will It Work All By Itself?

I don't think the semantic web will work all by itself. It will need some help to become a reality.

It is not very likely that you will be able to sell your car just by putting your RDF file on the Internet.

The "ISA" and "IBA" applications above will have to be developed by someone. Someone will have to build a search engine database for all the items, and someone will have to develop a standards for it.

It might be eBay, it might be Microsoft, it might be Google, or someone else. But someone will.

Soon we will see marketplaces based on RDF. And one day you will be able to collect information about almost everything on the web in a standardized RDF format.

It might not be free. You might have to pay for the information, or at least for selling your products.

Publishing information about things on the Internet will be much easier than before. Maybe the RSS language (see our RSS tutorial) will be the solution to some of the problems.

Please go to the next chapter to read more about some semantic web issues.

Previous Next

Make your web applications look like a million bucks


Most web applications today use boring methods to present data to their viewers using grids or simple HTML tables. FusionCharts induces "life" into the web applications by converting monotonous data into lively charts, gauges & maps.

FusionCharts works with all technologies like ASP, ASP.NET, PHP, ColdFusion, Ruby on Rails, JSP, HTML pages etc. and connects to any database to render animated & interactive charts. It takes less than 15 minutes and no expertise whatsoever to build your first chart and just a glance of it to captivate your audience. This fact is endorsed by our 12,000 customers and 150,000 users which include a majority of the Fortune 500 companies. And yeah, your applications could look like a million bucks by spending just $69.

So go ahead, download your copy of FusionCharts and start "wow-ing" your customers now!

Shopping Cart
Shopping Cart
$15 Domain Name
Save $20 / year!
Buy UK Domain Names
Register Domain Names
Cheap Domain Names
Cheap Web Hosting
Best Web Hosting
PHP MySQL Hosting
Top 10 Web Hosting
UK Reseller Hosting
Web Hosting
FREE Web Hosting
Website Templates
Flash Templates
Website Builder
Internet Business Opportunity
Custom Programming
FREE Trial or Demo
Web Content Manager
Forms,Web Alerts,RSS
Download XML editor
FREE Flash Website
FREE Web Templates
US Web Design Schools
HTML Certification
JavaScript Certification
XML Certification
PHP Certification
ASP Certification
Home HOME or Top of Page Validate   Validate   W3C-WAI level A conformance icon Printer Friendly  Printer Friendly

W3Schools is for training only. We do not warrant the correctness of its content. The risk from using it lies entirely with the user.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2009 by Refsnes Data. All Rights Reserved.