Answering Queries in Indefinite Databases and the Null Value Problem.

John Grant Jack Minker

Published in: Adv. Comput. Res. (1986)

Keyphrases

answering queries
databases
query answering
database
query processing
data integration
knowledge discovery
first order logic
relational databases
xml queries
database systems
data sources
materialized views
incomplete information
data model
decision making
data sets