August 2009
Intermediate to advanced
456 pages
14h 8m
English
Content preview from Foundations of Semantic Web Technologies
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Ontologies in OWL 151
been designed for data-driven applications, and offers a convenient option
for vendors of RDF stores to include some amount of OWL s up port without
sacrificing the advantages of a database-like implementation.
• All predefined classes and roles can be used.
• OWL 2 QL imposes different restrictions on the subject and the object
part of rdfs:subClassOf statements.
– On the su bject side, it is only allowed to use class names and
owl:someValuesFrom, th ough in the latter case the target class
must be owl:Thing.
– On the object side, it is allowed to use class names. It is also
allowed to use owl:someValuesFrom with target class as on the
object side, owl:complementOf with target class as on the subject
side, and owl:intersectionOf with ...
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