Equivalent Transformation in an Extended Space for Solving Query-Answering Problems.

Kiyoshi Akama Ekawit Nantajeewarawat

Published in: ACIIDS (1) (2014)

Keyphrases

query answering
data exchange
conjunctive queries
data integration
np complete
integrity constraints
incomplete information
answering queries
data integration systems
case study
np hard
data management
query rewriting
magic sets