Created on Feb. 18, 2013, 5:14 p.m. by Hevok & updated on March 11, 2013, 6:50 p.m. by Hevok
There are special Properties that are predified Classes in RDF, which are first cases of defining Classes and Property Hierarchy, rdfs:subClassOf
and rdfs:SubPropertyOf
which are transitive Property to define inheritance hierarchies for Classes and Properties.
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If one defines a new Property on has to define a dDomain from a cClass which is mapped to another Class that is the Range. So the there pProperties to define an RDFS Domain and Range. These are two Properties that maps the property to its dDomain and Ranger
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This Terminology Knowledge is expressed by Classes and the Relation between these Classes and is the Ontology or the Terminology part of the RDFS kKnowledge bBase.
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Defining Conceptional mModels is pretty simple in RDF Schema. The RDF part is the iInstantiation of this RDFS Termonological Knowledge
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rdfs:subClassOf
tTransitive pProperty to define iInheritance hHierarchies for cClasses
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rdfs:subProbertyOf
tTransitive pProperty to define inheritance hHierarchies for pProperties
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rdfs:domain
defines the dDomain of a pProperty concerning a cClass
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rdfs:range
defines rRange of a pProperty concerning a cClass
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Further Properties like rdfs:seeAlso
are for looking up iInformation that explains a rResource. In a formal way a sDubproperty of rdfs:seeAlso
rdfs:isDefinedBy
that defines the rRelation of rResource and its dDefinition. If one only need to make a cComment on something, which is not a dDefinition, one can use the pProperty rdfs:comment. In general it is agreed on that if one names rResources one usually takes the pProperty rdfs:label
. Behind rdfs:label
there is always be a for a human and machine readable name of a rResource, which is contrary to an ID which is only a alphanumeric sString that does not be human readable. So the real name of a rResource has to be readable.
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rdfs:seeAlso
defines a rRelation of a rResource to another, which explains it
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rdfs:isDefinedBy
sSubproperties of rdf:seeAlso, defines the rRelation of a rResource to its dDefinition
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rdfs:comment
cComment, usually as tText
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rdfs:label
"readable" name of a rResource (contrary to ID)
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