Introduction to RDF
The Resource Description Framework (RDF) is a W3C standard for
describing Web resources, such as the title, author, modification date, content,
and copyright information of a Web page.
What You Should Already Know
Before you continue you should have a basic understanding of the following:
- HTML
- XHTML
- XML
- XML Namespaces
If you want to study these subjects first, find the tutorials on our
Home page.
What is RDF?
- RDF stands for Resource Description Framework
- RDF is a framework for describing resources on the web
- RDF provides a model for data, and a syntax so that independent parties
can exchange and use it
- RDF is designed to be read and understood by computers
- RDF is not designed for being displayed to people
- RDF is written in XML
- RDF is a part of the W3C's Semantic Web Activity
- RDF is a W3C Recommendation
RDF - Examples of Use
- Describing properties for shopping items, such as price and availability
- Describing time schedules for web events
- Describing information about web pages, such as content, author, created and modified date
- Describing content and rating for web pictures
- Describing content for search engines
- Describing electronic libraries
RDF is Designed to be Read by Computers
RDF was designed to provide a common way to describe information so it can be
read and understood by computer applications.
RDF descriptions are not designed to be displayed on the web.
RDF is Written in XML
RDF documents are written in XML. The
XML language used by RDF is called RDF/XML.
By using XML, RDF information can easily be exchanged between different types
of computers using different types of operating systems and application
languages.
RDF and "The Semantic Web"
The RDF language is a part of the
W3C's Semantic Web Activity. W3C's "Semantic Web Vision" is a future where:
- Web information has exact meaning
- Web information can be understood and processed by computers
- Computers can integrate information from the web
RDF is a W3C Recommendation
RDF became a W3C Recommendation in February 2004.
A W3C Recommendation is understood by the industry and the web community as a
web standard. A W3C Recommendation is a stable specification developed by a W3C
Working Group and reviewed by the W3C Membership.
The official W3C recommendation can be found at this link:
http://www.w3.org/RDF/
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