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RDF Dublin Core Metadata Initiative

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The Dublin Core Metadata Initiative (DCMI) has created some predefined properties for describing documents.

The Dublin Core

RDF is metadata (data about data). RDF is used to describe information resources.

The Dublin Core is a set of predefined properties for describing documents.

The first Dublin Core properties were defined at the Metadata Workshop in Dublin, Ohio in 1995 and is currently maintained by the Dublin Core Metadata Initiative.

Property	Definition
Contributor	An entity responsible for making contributions to the content of the resource
Coverage	The extent or scope of the content of the resource
Creator	An entity primarily responsible for making the content of the resource
Format	The physical or digital manifestation of the resource
Date	A date of an event in the lifecycle of the resource
Description	An account of the content of the resource
Identifier	An unambiguous reference to the resource within a given context
Language	A language of the intellectual content of the resource
Publisher	An entity responsible for making the resource available
Relation	A reference to a related resource
Rights	Information about rights held in and over the resource
Source	A Reference to a resource from which the present resource is derived
Subject	A topic of the content of the resource
Title	A name given to the resource
Type	The nature or genre of the content of the resource

A quick look at the table above indicates that RDF is ideal for representing Dublin Core information.

RDF Example

The following example demonstrates the use of some of the Dublin Core properties in an RDF document:

<?xml version="1.0"?>

<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc= "http://purl.org/dc/elements/1.1/">

<rdf:Description rdf:about="http://www.w3schools.com">
<dc:description>W3Schools - Free tutorials</dc:description>
<dc:publisher>Refsnes Data as</dc:publisher>
<dc:date>2008-09-01</dc:date>
<dc:type>Web Development</dc:type>
<dc:format>text/html</dc:format>
<dc:language>en</dc:language>
</rdf:Description>

</rdf:RDF>