RDF Reference Manual
RDF Namespaces
RDF Namespace (xmlns:rdf)::http://www.w3.org/1999/02/22-rdf-syntax-ns#
RDF Namespace (xmlns:rdfs)::http://www.w3.org/2000/01/rdf-schema#
RDF File Extensions and MIME Types
The recommended file extension for RDF files is .rdf, however, the extension .XML is often used for compatibility with older XML parsers.
MIME Type: "application/rdf+xml".
RDFS / RDF Classes
| Element | Class | Subclass |
|---|---|---|
| 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 | Resource domain |
| rdfs:range | Property | Class | Resource range |
| rdfs:subPropertyOf | Property | Property | This property is a sub-property of another property |
| rdfs:subClassOf | Class | Class | The resource is a subclass of another class |
| rdfs:comment | Resource | Literal | Human-readable description of the resource |
| rdfs:label | Resource | Literal | Human-readable label (name) of the resource |
| rdfs:isDefinedBy | Resource | Resource | Definition of the resource |
| rdfs:seeAlso | Resource | Resource | Additional information about the resource |
| rdfs:member | Resource | Resource | Member of the resource |
| rdf:first | List | Resource | |
| rdf:rest | List | List | |
| rdf:subject | Statement | Resource | The subject resource of an RDF statement |
| rdf:predicate | Statement | Resource | The predicate resource of an RDF statement |
| rdf:object | Statement | Resource | The object resource of an RDF statement |
| rdf:value | Resource | Resource | Value attribute |
| rdf:type | Resource | Class | The resource is an instance of a class |
RDF Properties
| Element | Domain | Range | Description |
|---|---|---|---|
| rdf:about | Defines the resource being described | ||
| rdf:Description | Container for resource description | ||
| 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 the 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 | (Deprecated) | ||
| rdf:aboutEachPrefix | (Deprecated) | ||
| rdf:bagID | (Deprecated) |
Elements described as "Deprecated" have been recently removed from the RDF standard.