889 search results - page 96 / 178 » A Method for Secure Query Processing in Mobile Databases |
GEOINFORMATICA
1998
14 years 9 months ago
1998
Due to the increasing popularity of spatial databases, researchers have focused their efforts on improving the query processing performance of the most expensive spatial database ...
VLDB
2005
ACM
15 years 3 months ago
2005
ACM
We present DITN, a new method of parallel querying based on dynamic outsourcing of join processing tasks to non-dedicated, heterogeneous computers. In DITN, partitioning is not th...
ICDM
2008
IEEE
15 years 4 months ago
2008
IEEE
Since Jim Gray introduced the concept of ”data cube” in 1997, data cube, associated with online analytical processing (OLAP), has become a driving engine in data warehouse ind...
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PODS
1998
ACM
15 years 2 months ago
1998
ACM
We consider the problem of estimating CPU (distance computations) and I/O costs for processing range and k-nearest neighbors queries over metric spaces. Unlike the specific case ...
DOLAP
2004
ACM
15 years 3 months ago
2004
ACM
We address the inference control problem in data cubes with some data known to users through external knowledge. The goal of inference controls is to prevent exact values of sensi...