EDBT
2012
ACM
11 years 7 months ago
2012
ACM
Many stream processing applications require access to a multitude of streaming as well as stored data sources. Yet there is no clear semantics for correct continuous query executi...
ICDE
2012
IEEE
11 years 7 months ago
2012
IEEE
— Accurate query performance prediction (QPP) is central to effective resource management, query optimization and query scheduling. Analytical cost models, used in current genera...
PVLDB
2011
12 years 7 months ago
2011
Adaptive indexing is characterized by the partial creation and refinement of the index as side effects of query execution. Dynamic or shifting workloads may benefit from prelimi...
ICDE
2011
IEEE
12 years 8 months ago
2011
IEEE
— In this paper, we study the problem of efficiently computing multiple aggregation queries over a data stream. In order to share computation, prior proposals have suggested ins...
ESWS
2011
Springer
2011
Springer
Zero-Knowledge Query Planning for an Iterator Implementation of Link Traversal Based Query Execution
12 years 8 months ago
Abstract. Link traversal based query execution is a new query execution paradigm for the Web of Data. This approach allows the execution engine to discover potentially relevant dat...
CIDR
2011
12 years 8 months ago
2011
Amazon’s Mechanical Turk (“MTurk”) service allows users to post short tasks (“HITs”) that other users can receive a small amount of money for completing. Common tasks on...
IDEAS
2009
IEEE
13 years 2 months ago
2009
IEEE
We consider the class of database programs and address the problem of minimizing the cost of their exchanges with the database server. This cost partly consists of query execution...
PVLDB
2008
13 years 4 months ago
2008
Estimates of predicate selectivities by database query optimizers often differ significantly from those actually encountered during query execution, leading to poor plan choices a...
NIS
1998
13 years 4 months ago
1998
The execution time of a large query depends mainly on the memory utilization which should avoid disk accesses for intermediate results. Poor memory management can hurt performance ...
DPD
1998
13 years 4 months ago
1998
Distributed databases operating over wide-area networks such as the Internet, must deal with the unpredictable nature of the performance of communication. The response times of acc...