593 search results - page 1 / 119 » Distributed query evaluation with performance guarantees |
SIGMOD
2007
ACM
14 years 4 months ago
2007
ACM
Partial evaluation has recently proven an effective technique for evaluating Boolean XPath queries over a fragmented tree that is distributed over a number of sites. What left ope...
BNCOD
2008
13 years 5 months ago
2008
Abstract. Accurate selectivity estimations are essential for query optimization decisions where they are typically derived from various kinds of histograms which condense value dis...
SSD
2009
Springer
13 years 11 months ago
2009
Springer
The range nearest-neighbor (NN) query is an important query type in location-based services, as it can be applied to the case that an NN query has a spatial region, instead of a lo...
CIKM
2008
Springer
13 years 6 months ago
2008
Springer
Structured P2P overlays supporting standard database functionalities are a popular choice for building large-scale distributed data management systems. In such systems, estimating...
QEST
2008
IEEE
13 years 10 months ago
2008
IEEE
Performance Trees are a unifying framework for the specification of performance queries involving measures and requirements. This paper describes an evaluation environment for Pe...