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Towards Conceptual Query Answering.
Suk-Chung Yoon
Published in:
ISMIS (1997)
Keyphrases
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query answering
data exchange
integrity constraints
conjunctive queries
data complexity
answering queries
data integration
incomplete information
query answers
query rewriting
inconsistent databases
data integration systems
conceptual model
np hard
query containment
knowledge base
query relaxation
data mining