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What is RDF?

Started by grofee, February 23, 2022, 04:53:30 PM

grofee

RDFa is an extension to HTML5 that helps you markup things like People, Places, Events, Recipes and Reviews. Search Engines and Web Services use this markup to generate better search listings and give you better visibility on the Web, so that people can find your website more easily.

Akshay_M

RDF stands for Resource Description Framework. It is a standard for representing and exchanging structured information on the web. RDF is a key component of the Semantic Web, a vision proposed by Tim Berners-Lee to make web content more easily interpreted by machines.

In RDF, information is represented as a collection of triples, which consist of three components:

Subject: The resource or entity being described. It is represented by a Uniform Resource Identifier (URI) or a blank node.

Predicate: The property or relationship that links the subject to an object. It is also represented by a URI.

Object: The value or object of the property. It can be a URI, a literal value (e.g., string, number, date), or another blank node.

The basic structure of an RDF triple can be represented as: Subject - Predicate - Object.

For example, let's consider a simple RDF triple:

Subject: "John" (represented by the URI "http://example.org/person/John")
Predicate: "hasAge" (represented by the URI "http://example.org/hasAge")
Object: "30" (a literal value representing John's age)

The RDF triple can be written as: "John hasAge 30."

RDF provides a flexible and extensible way to model and describe various types of data on the web, making it possible to create rich and interconnected datasets. It enables data integration, linking, and sharing across different applications and domains. The data represented in RDF can be queried and processed using the RDF query language SPARQL, which allows for sophisticated searches and data analysis in the Semantic Web context.