XML Session 6

[Select One] Ontologies

• are the result of reasoning

• do not make use of RDF themselves

• define relationships of concepts within a domain

• are used to query RDF graphs

[Select One] An ontology is NOT used to...

• enable shared understanding between humans and machines

• enable semantic reasoning

• formally represent knowledge

• validate XML files

[True/False] Ontologies are always stores as RDF triples

• True

• False

[Select One] How are statements in an ontology classified?

• Subject, Predicate, Object

• Class, Property, Individual

• ABox, BBox and CBox

• ABox, TBox and RBox

[Select One] ABox statements are statements about:

• Properties

• Axioms

• Individuals

• Classes

[Select One] OWL stands for...

• Ontology Working Language

• OWL Web Language

• Open Web Logy

• Web Ontology Language

[True/False] OWL replaces RDFS

• True

• False

[Select One] What is true for a transitive relation?

• If A -> B and B -> A, then A = B

• If A -> B, then A in Class C

• If A -> B and B -> C then A -> C

• If A -> B, then B -> A

[Select One] A symmetric relation cannot be...

• irreflexive

• transitive

• reflexive

• asymmetric

[Select One] What are competency questions?

• A necessary pre-requisite for reasoning

• A tool for formalization

• A tool for finding ontology errors

• A tool for ontology creation