Sciweavers

1429 search results - page 34 / 286
» Efficient processing of XPath queries using indexes
Sort
View
CLOUDCOM
2010
Springer
13 years 5 months ago
Voronoi-Based Geospatial Query Processing with MapReduce
Geospatial queries (GQ) have been used in a wide variety of applications such as decision support systems, profile-based marketing, bioinformatics and GIS. Most of the existing qu...
Afsin Akdogan, Ugur Demiryurek, Farnoush Banaei Ka...
SIGMOD
2004
ACM
198views Database» more  SIGMOD 2004»
14 years 7 months ago
Secure XML Querying with Security Views
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
Wenfei Fan, Chee Yong Chan, Minos N. Garofalakis
IS
2006
13 years 7 months ago
Answering content and structure-based queries on XML documents using relevance propagation
As XML documents contain both content and structure information, taking advantage of the document structure in the retrieval process can lead to better identify relevant informati...
Karen Sauvagnat, Mohand Boughanem, Claude Chrismen...
VLDB
1997
ACM
124views Database» more  VLDB 1997»
13 years 11 months ago
An Efficient Cost-Driven Index Selection Tool for Microsoft SQL Server
In this paper we describe novel techniques that make it possible to build an industrial-strength tool for automating the choice of indexes in the physical design of a SQL database...
Surajit Chaudhuri, Vivek R. Narasayya
VLDB
2008
ACM
178views Database» more  VLDB 2008»
14 years 7 months ago
The Bdual-Tree: indexing moving objects by space filling curves in the dual space
Abstract Existing spatiotemporal indexes suffer from either large update cost or poor query performance, except for the Bx -tree (the state-of-the-art), which consists of multiple ...
Man Lung Yiu, Yufei Tao, Nikos Mamoulis