3225 search results - page 131 / 645 » Query Optimization by Stored Queries |
VLDB
2005
ACM
14 years 2 months ago
2005
ACM
We study XML stream-specific schema-based optimization. We assume a widely-adopted automata-based execution model for XQuery evaluation. Criteria are established regarding what s...
PVLDB
2010
13 years 7 months ago
2010
Many DBMS products in the market provide built in encryption support to deal with the security concerns of the organizations. This solution is quite effective in preventing data ...
VLDB
2007
ACM
14 years 9 months ago
2007
ACM
Views over probabilistic data contain correlations between tuples, and the current approach is to capture these correlations using explicit lineage. In this paper we propose an al...
FAW
2008
Springer
13 years 10 months ago
2008
Springer
Abstract. We study a constrained version of the shortest path problem in polygonal domains, in which the path must visit a given target polygon. We provide an efficient algorithm f...
SIGMOD
2004
ACM
14 years 9 months ago
2004
ACM
We define a framework for static optimization of sliding window conjunctive queries over infinite streams. When computational resources are sufficient, we propose that the goal of...