DPD
2002
13 years 7 months ago
2002
A major cost in executing queries in a distributed database system is the data transfer cost incurred in transferring relations (fragments) accessed by a query from different sites...
SIGCSE
2008
ACM
13 years 7 months ago
2008
ACM
The underlying processes that enable database query execution are fundamental to understanding database management systems. However, these processes are complex and can be difficu...
CONCURRENCY
2006
13 years 7 months ago
2006
vices provide an important abstract layer on top of heterogeneous components (hardware and software) that take part into a grid environment. In this scenario, applications, like sc...
DAMON
2008
Springer
13 years 9 months ago
2008
Springer
Comparisons between the merits of row-wise storage (NSM) and columnar storage (DSM) are typically made with respect to the persistent storage layer of database systems. In this pa...
VLDB
1992
ACM
13 years 11 months ago
1992
ACM
In this paper, we explore the execution of pipelined hash joins in a multiprocessor-based database system. To improve the query execution, an innovative approach on query executio...
DAWAK
2001
Springer
14 years 2 days ago
2001
Springer
Tree based indexing structures like -trees, ·-trees, Bitmap indexes and Ê-trees have become essential for getting good performance when accessing vast datasets. However, most dat...
P2P
2003
IEEE
14 years 26 days ago
2003
IEEE
Sensor networks, that consist of potentially several thousands of nodes each with sensing (heat, sound, light, magnetism, etc.) and wireless communication capabilities, provide gr...
VLDB
2004
ACM
14 years 28 days ago
2004
ACM
Adaptive query processing schemes attempt to reoptimize query plans during the course of query execution. A variety of techniques for adaptive query processing have been proposed,...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
In this paper we propose and analyze a method for proofs of actual query execution in an outsourced database framework, in which a client outsources its data management needs to a...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
Cost-based query optimizers need to estimate the selectivity of conjunctive predicates when comparing alternative query execution plans. To this end, advanced optimizers use multi...