Resource Description Framework(RDF)

RDF: DESCRIBING RESOURCES

A resource is every object / thing we can talk about.

Every resource has a URI. A URI can be a URL (Uniform Resource Locator, or web address) or any other kind of unique identifier.

Properties are a special kind of resource; they describe relations between other resources.

Like all resources, properties are identified by URIs.

RDF: STATEMENTS

Statements are assertions regarding the properties of resources.

A statement is a triple consisting of a resource, a property, and a value.

The value can either be a resource or a literal.

Literals are atomic values : numbers, strings, dates, etc.

Recommended Readings:

Semantic Web:

1. T. Berners-Lee, J. Hendler, and O. Lassila. The Semantic Web. Scientific American 284 (May 2001): https://www-sop.inria.fr/acacia/cours/essi2006/Scientific%20American_%20Feature%20Article_%20The%20Semantic%20Web_%20May%202001.pdf

2. T. Berners-Lee, with M. Fischetti. Weaving the Web. San Francisco: Harper, 1999: https://www.w3.org/People/Berners-Lee/Weaving/Overview.html

Web Languages:

1. D. Beckett, ed. RDF/XML Syntax Specification (Revised). W3C Recommendation. February 10, 2004: https://www.w3.org/TR/rdf-schema/

2. D. Brickley and R.V. Guha, eds. RDF Vocabulary Description Language 1.0: RDF Schema. W3C Recommendation. February 10, 2004: https://www.w3.org/TR/rdf-syntax-grammar/

3. F. Manola and E. Miller, eds. RDF Primer. W3C Recommendation. February 10, 2004: https://www.w3.org/TR/rdf-primer/

4. E. Torres, L. Feigenbaum, and K. Clark, eds. SPARQL Protocol for RDF. W3C Recommendation, 15 January 2008: www.w3.org/TR/rdf-sparql-protocol/

5. Pascal Hitzler, Markus Krötzsch, Bijan Parsia, Peter F. Patel-Schneider, and Sebastian Rudolph. OWL 2 Web Ontology Language Primer: www.w3.org/TR/owl2-primer/