3269 search results - page 169 / 654 » Query Optimization for XML |
152
Voted
DEXA
2005
Springer
15 years 9 months ago
2005
Springer
The first step in finding an efficient way to solve any difficult problem is making a complete, possibly formal, problem specification. This paper introduces a formal specifica...
158
Voted
WWW
2007
ACM
16 years 4 months ago
2007
ACM
Continuous queries are used to monitor changes to time varying data and to provide results useful for online decision making. Typically a user desires to obtain the value of some ...
338
Voted
Tutorial
The wide spread use of cellular phones, handheld devices, and GPS-like technology enables location-aware environments where virtually all objects are aware of their locations. Loca...
134
Voted
PODS
2004
ACM
16 years 3 months ago
2004
ACM
The problem of deciding query containment has important applications in classical query optimization and heterogeneous database systems. Query containment is undecidable for unres...
111
Voted
DLOG
2010
15 years 1 months ago
2010
We develop a query algebra that supports efficient assertion retrieval--a natural extension of instance retrieval. The algebra is based on previously developed techniques for index...