12.1.9. RDF Dublin Core metadata Initiative

Dublin core ¶

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

The Dublin core is a set of predefined properties that describe the document.

The first Dublin core attributes were defined by the metadata working Group in Dublin, Ohio in 1995 and are currently maintained by the Dublin metadata Initiative.

Attribute	Define
Contributor	An entity (such as an author) responsible for contributing to the content of a resource.
Coverage	The atmosphere or scope of resource content
Creator	An entity that is primarily responsible for creating resource content.
Format	Physical or digital representation of resources.
Date	The date of an event in the resource life cycle.
Description	Description of the content of the resource.
Identifier	An explicit reference to a resource in a given context
Language	The language used in the content of resource intelligence.
Publisher	An entity responsible for making the content of the resource available
Relation	A reference to a related resource
Rights	Information about rights reserved within and above resources
Source	A reference to a resource that is the source of the current resource.
Subject	A theme of resource content
Title	A name for the resource
Type	The type or type of content of the resource.

Attribute

Define

Contributor

An entity (such as an author) responsible for contributing to the content of a resource.

Coverage

The atmosphere or scope of resource content

Creator

An entity that is primarily responsible for creating resource content.

Format

Physical or digital representation of resources.

Date

The date of an event in the resource life cycle.

Description

Description of the content of the resource.

Identifier

An explicit reference to a resource in a given context

Language

The language used in the content of resource intelligence.

Publisher

An entity responsible for making the content of the resource available

Relation

A reference to a related resource

Rights

Information about rights reserved within and above resources

Source

A reference to a resource that is the source of the current resource.

Subject

A theme of resource content

Title

A name for the resource

Type

The type or type of content of the resource.

By browsing the table above, we can find that RDF is very suitable for expressing Dublin core information.

RDF instance ¶

The following example demonstrates the use of Dublin core attributes 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.runoob.com">
  <dc:description>Run Noob - 奔跑吧！菜鸟</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>

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.