Efficient Query Answering over Datalog with Existential Quantifiers.

Nicola Leone Marco Manna Giorgio Terracina Pierfrancesco Veltri

Published in: SEBD (2012)

Keyphrases

query answering
data exchange
data complexity
integrity constraints
ontology based data access
conjunctive queries
data integration
incomplete information
answering queries
query rewriting
inconsistent databases
datalog programs
query containment
xml data exchange