Data exchange and schema mappings in open and closed worlds.

Leonid Libkin Cristina Sirangelo

Published in: J. Comput. Syst. Sci. (2011)

Keyphrases

data exchange
schema mappings
closed world
query answering
data integration
database schema
data management
xml data exchange
conjunctive queries
xml schema
data complexity
incomplete information
business intelligence
source schema
finite sets
decision support
high level specifications
database