May 23, 2021 RDF
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
The recommended extension of the RDF file is .rdf, however, the extension . XML is often used to compatible with older XML parsers.
MIME type: "application/rdf-xml".
| Elements | Class | Sub-class |
|---|---|---|
| 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 |
| Elements | Field | Range | Describe |
|---|---|---|---|
| rdfs:domain | Property | Class | The resource domain |
| rdfs:range | Property | Class | The scope of the resource |
| rdfs:subPropertyOf | Property | Property | The property is a child of a property |
| rdfs:subClassOf | Class | Class | A resource is a sub-class of a class |
| rdfs:comment | Resource | Literal | A description of human-readable resources |
| rdfs:label | Resource | Literal | Human-readable resource tags (names) |
| rdfs:isDefinedBy | Resource | Resource | The definition of a resource |
| rdfs:seeAlso | Resource | Resource | 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 resource body of an RDF statement |
| rdf:predicate | Statement | Resource | The predicate of the resource stated in an RDF |
| rdf:object | Statement | Resource | A resource object of an RDF statement |
| rdf:value | Resource | Resource | Value property |
| rdf:type | Resource | Class | A resource is an instance of a class |
| Elements | Field | Range | Describe |
|---|---|---|---|
| rdf:about | Define the resources described | ||
| rdf:Description | The container described by the resource | ||
| rdf:resource | Define a resource to determine a property | ||
| rdf:datatype | Define the data type of an element | ||
| rdf:ID | Defines the ID of the element | ||
| rdf:li | Define the list | ||
| rdf:_ n | Define a node | ||
| rdf:nodeID | Defines the ID of the element node | ||
| rdf:parseType | Defines how elements should be resolved | ||
| rdf:RDF | The root of an RDF document | ||
| xml:base | The XML foundation is defined | ||
| xml:lang | The language that defines the contents of the element | ||
| rdf:aboutEach | (Delete) | ||
| rdf:aboutEachPrefix | (Delete) | ||
| rdf:bagID | (Delete) |
Described as "deleted" are elements that were recently removed from the RDF standard.