435 search results - page 39 / 87 » Querying Inconsistent Databases: Algorithms and Implementati... |
ICDE
2007
IEEE
14 years 10 months ago
2007
IEEE
Recently, there has been significant interest in developing space and time efficient solutions for answering continuous summarization queries over data streams. While these techni...
GIS
2007
ACM
14 years 22 days ago
2007
ACM
Spatial join is an important yet costly operation in spatial databases. In order to speed up the execution of a spatial join, the input tables are often indexed based on their spa...
SIGMOD
2009
ACM
14 years 9 months ago
2009
ACM
Solid state drives perform random reads more than 100x faster than traditional magnetic hard disks, while offering comparable sequential read and write bandwidth. Because of their...
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
XML languages, such as XQuery, XSLT and SQL/XML, employ XPath as the search and extraction language. XPath expressions often define complicated navigation, resulting in expensive...
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
This paper presents a novel and complementary technique to optimize an XPath query by minimizing its wildcard steps. Our approach is based on using a general composite axis called...