Algebraic Query Optimization for Distributed Top-k Queries.
Thomas NeumannSebastian MichelPublished in: BTW (2007)
Keyphrases
- query optimization
- query processing
- distributed query processing
- queries involving
- cost model
- query execution plans
- selectivity estimation
- query evaluation
- semantic query optimization
- join queries
- database systems
- efficient processing
- query optimizers
- efficient query processing
- query plan
- efficient execution
- multidatabase systems
- join operators
- query execution
- execution plan
- range queries
- cardinality estimation
- complex queries
- recursive queries
- xml data
- index structure
- query rewriting
- cost estimation
- query result
- query scheduling
- query processing and optimization
- approximate query answering
- aggregate queries
- query optimizer
- relational database systems
- data management
- distributed systems
- r tree
- user queries
- query execution plan
- distributed environment
- peer to peer
- join algorithms
- unstructured p p systems
- database management systems
- query containment
- data intensive
- skyline queries
- distributed database systems
- conjunctive queries
- databases
- database