Query Optimization in a Mediator for Digital Libraries.
Faouzia WadjinnyDalila ChiadmiPublished in: NTMS (2008)
Keyphrases
- query optimization
- digital libraries
- database systems
- cost model
- metadata
- cost estimation
- query execution
- query processing
- multidatabase systems
- cardinality estimation
- semantic query optimization
- xml data
- efficient execution
- data sources
- query plan
- query optimizers
- query scheduling
- selectivity estimation
- semi structured
- join queries
- data placement
- query optimizer
- recursive queries
- peer to peer
- approximate query answering
- heterogeneous data sources
- databases
- continuous queries
- management system
- end users
- query execution plan