_____ utilises intervals over query cost estimates,rather than specifying the estimates for single.
_____ utilises intervals over query cost estimates,rather than specifying the estimates for single.
We can merge the execution as well as an optimisation phase of query processing by combining eddies with suitable _______ algorithms.
We can merge the execution as well as an optimisation phase of query processing by combining eddies with suitable _______ algorithms.
River is essentially ________threaded
River is essentially ________threaded
Hash table overflow occurs if the data in hash table is ________than main memory
Hash table overflow occurs if the data in hash table is ________than main memory
_________is a sharednothing parallel query processing framework. It adjusts dynamically to any fluctuations in workload and performance.
_________is a sharednothing parallel query processing framework. It adjusts dynamically to any fluctuations in workload and performance.
A _______ can be used to robustly produce near-record performance on I/O intensive benchmarks such as hash joins and parallel sorting
A _______ can be used to robustly produce near-record performance on I/O intensive benchmarks such as hash joins and parallel sorting
query processing process known as ___________
query processing process known as ___________
The feedback required in an adaptive system is solution to its _______
The feedback required in an adaptive system is solution to its _______
.________ systems are also known by "self-tuning” or "dynamic" systems.
.________ systems are also known by "self-tuning” or "dynamic" systems.
Merging techniques are used by all sorting in ______ database systems
Merging techniques are used by all sorting in ______ database systems
The query processing system is said to be adaptive if it has _____features.
The query processing system is said to be adaptive if it has _____features.
A fixed-sized buffer of tuples that is to be processed by one or more operators is maintained by an eddy __________.
A fixed-sized buffer of tuples that is to be processed by one or more operators is maintained by an eddy __________.
Adaptive query processing has been utilised to detect and correct ______ errors due to wrong statistics or simplified cost metrics.
Adaptive query processing has been utilised to detect and correct ______ errors due to wrong statistics or simplified cost metrics.
_______ are frequent in the busty performance of servers and networks in wide-area environments
_______ are frequent in the busty performance of servers and networks in wide-area environments
The purpose of the addition of an eddy is to control various ______ in a query
The purpose of the addition of an eddy is to control various ______ in a query
Adaptive data query and processing is essentially used by data grids to offer better _________to users and applications in spite of dynamically changing resources and environments
Adaptive data query and processing is essentially used by data grids to offer better _________to users and applications in spite of dynamically changing resources and environments
Query plans ______ can be symbolised as trees and are algebra expressions
Query plans ______ can be symbolised as trees and are algebra expressions
In the hash ripple diagram,the arrival rate of one relation is _______ times faster than the other
In the hash ripple diagram,the arrival rate of one relation is _______ times faster than the other
The eddy maintains a_______ queue of all tuples that require processing
The eddy maintains a_______ queue of all tuples that require processing
The participating operators of an eddy are encapsulated by the ________.
The participating operators of an eddy are encapsulated by the ________.