Keyphrases
- query optimization
- wireless sensor networks
- network lifetime
- energy consumption
- routing algorithm
- routing protocol
- sensor nodes
- energy aware
- energy efficiency
- energy efficient
- topology control
- sensor networks
- residual energy
- cost model
- database systems
- biological inspired
- ad hoc networks
- cluster head
- multi hop
- sink node
- maximum lifetime
- mobile ad hoc networks
- query processing
- data placement
- multidatabase systems
- cardinality estimation
- xml data
- cost estimation
- query execution
- query scheduling
- selectivity estimation
- power consumption
- query optimizer
- recursive queries
- approximate query answering
- continuous queries
- data center
- multi dimensional
- query optimizers
- databases