On (In)Tractability of OBDA with OWL 2 QL.

Stanislav Kikot Roman Kontchakov Michael Zakharyaschev

Published in: Description Logics (2011)

Keyphrases

semantic web
query language
ontology languages
knowledge representation
constraint satisfaction
np complete
semantic web technologies

open world
databases
owl ontologies
computational complexity
knowledge base
description logics

knowledge management
object oriented
integrity constraints
incomplete information
data complexity
conceptual modeling

e learning
constraint problems
owl dl
constraint language
web ontology language
artificial intelligence