Keyphrases
- query optimization
- query processing
- database systems
- cost model
- multidatabase systems
- sparql queries
- query execution
- cost estimation
- xml data
- cardinality estimation
- query rewriting
- query execution plans
- continuous queries
- query optimizer
- data placement
- recursive queries
- data model
- relational database systems
- databases
- data structure
- query scheduling
- query execution plan