503 search results - page 57 / 101 » Applying Multiple Query Optimization in Mobile Databases |
144
Voted
SIGIR
1999
ACM
15 years 6 months ago
1999
ACM
The fast growth of multimedia information in image and video databases has triggered research on efficient retrieval methods. This paper deals with structural queries, a type of c...
121
Voted
FTDB
2007
15 years 2 months ago
2007
Database Management Systems (DBMSs) are a ubiquitous and critical component of modern computing, and the result of decades of research and development in both academia and industr...
143
Voted
ICDE
2005
IEEE
15 years 8 months ago
2005
IEEE
— XQuery, the defacto XML query language, is a functional language with operational semantics, which precludes the direct application of classical query optimization techniques. ...
137
Voted
VLDB
2004
ACM
15 years 7 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...
112
Voted
VLDB
2004
ACM
15 years 7 months ago
2004
ACM
When query optimizers erroneously assume that database columns are statistically independent, they can underestimate the selectivities of conjunctive predicates by orders of magni...