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Efficiently Updating Cost Repository Values for Query Optimization on Web Data Sources in a Mediator/Wrapper Environment.
Justo Hidalgo
Alberto Pan
Manuel Álvarez
Jaime Guerrero
Published in:
NGITS (2006)
Keyphrases
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query optimization
cost estimation
web data sources
database systems
cost model
query plan
semi structured
query processing
execution plan
multidatabase systems
data placement
xml data
cardinality estimation
query optimizer
feature selection
selectivity estimation
query execution
query scheduling
join operators
query execution plans
join queries
website
recursive queries
query optimizers
metadata
multi dimensional
information extraction
data sources
machine learning