Keyphrases
- efficient learning
- cost estimation
- query optimization
- multidatabase environment
- software cost estimation
- query processing
- query optimizer
- software development
- query execution
- query plan
- response time
- user queries
- database
- execution plan
- keywords
- learning algorithm
- software projects
- cost model
- range queries
- query evaluation
- data sources
- database queries
- pattern languages
- data structure
- databases
- efficient processing
- xml data
- data model
- e learning