A Query Sampling Method of Estimating Local Cost Parameters in a Multidatabase System.
Qiang ZhuPer-Åke LarsonPublished in: ICDE (1994)
Keyphrases
- query processing
- multidatabase environment
- processing cost
- query optimization
- response time
- communication cost
- relevance feedback
- parameter values
- database queries
- database
- query evaluation
- cost estimation
- database systems
- query plan
- query formulation
- parameter estimation
- range queries
- query expansion
- data structure
- keyword search
- high cost
- multidatabase systems
- vector space
- total cost
- cost sensitive
- user queries
- user interaction
- data sources
- query cost
- parameter space
- estimation process
- maintenance cost
- query execution
- database management systems
- keywords
- information retrieval