RDF Tutorial
RDF HOMERDF Intro
RDF Rules
RDF Example
RDF Elements
RDF Containers
RDF Collections
RDF Schema
RDF Dublin Core
RDF OWL
RDF Reference
RDF ReferenceRDF Reference
The RDF Namespaces
The RDF namespace (xmlns:rdf) is: http://www.w3.org/1999/02/22-rdf-syntax-ns#
The RDFS namespace (xmlns:rdfs ) is: http://www.w3.org/2000/01/rdf-schema#
The RDF Extension and MIME Type
The recommended file extension for RDF files is .rdf. However, the extension .xml is often used to provide compatibility with old xml parsers.
The MIME type should be "application/rdf+xml".
RDFS / RDF Classes
| Element | Class of | Subclass of |
|---|---|---|
| rdfs:Class | All classes | |
| rdfs:Datatype | Data types | Class |
| rdfs:Resource | All resources | Class |
| rdfs:Container | Containers | Resource |
| rdfs:Literal | Literal values (text and numbers) | Resource |
| rdf:List | Lists | Resource |
| rdf:Property | Properties | Resource |
| rdf:Statement | Statements | Resource |
| rdf:Alt | Containers of alternatives | Container |
| rdf:Bag | Unordered containers | Container |
| rdf:Seq | Ordered containers | Container |
| rdfs:ContainerMembershipProperty | Container membership properties | Property |
| rdf:XMLLiteral | XML literal values | Literal |
RDFS / RDF Properties
| Element | Domain | Range | Description |
|---|---|---|---|
| rdfs:domain | Property | Class | The domain of the resource |
| rdfs:range | Property | Class | The range of the resource |
| rdfs:subPropertyOf | Property | Property | The property is a sub property of a property |
| rdfs:subClassOf | Class | Class | The resource is a subclass of a class |
| rdfs:comment | Resource | Literal | The human readable description of the resource |
| rdfs:label | Resource | Literal | The human readable label (name) of the resource |
| rdfs:isDefinedBy | Resource | Resource | The definition of the resource |
| rdfs:seeAlso | Resource | Resource | The additional information about the resource |
| rdfs:member | Resource | Resource | The member of the resource |
| rdf:first | List | Resource | |
| rdf:rest | List | List | |
| rdf:subject | Statement | Resource | The subject of the resource in an RDF Statement |
| rdf:predicate | Statement | Resource | The predicate of the resource in an RDF Statement |
| rdf:object | Statement | Resource | The object of the resource in an RDF Statement |
| rdf:value | Resource | Resource | The property used for values |
| rdf:type | Resource | Class | The resource is an instance of a class |
RDF Attributes
| Element | Domain | Range | Description |
|---|---|---|---|
| rdf:about | Defines the resource being described | ||
| rdf:Description | Container for the description of a resource | ||
| rdf:resource | Defines a resource to identify a property | ||
| rdf:datatype | Defines the data type of an element | ||
| rdf:ID | Defines the ID of an element | ||
| rdf:li | Defines a list | ||
| rdf:_n | Defines a node | ||
| rdf:nodeID | Defines the ID of an element node | ||
| rdf:parseType | Defines how an element should be parsed | ||
| rdf:RDF | The root of an RDF document | ||
| xml:base | Defines the XML base | ||
| xml:lang | Defines the language of the element content | ||
| rdf:aboutEach | (removed) | ||
| rdf:aboutEachPrefix | (removed) | ||
| rdf:bagID | (removed) |
Elements described as (removed) are removed from the latest RDF standard.
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