154 search results - page 1 / 31 » A Flexible Query Graph Based Model for the Efficient Executi... |
ICDE
2007
IEEE
13 years 8 months ago
2007
IEEE
In this paper, we propose a simple and flexible execution model that (i) supports a wide spectrum of alternative optimization and execution strategies and their mixtures, (ii) pro...
WWW
2005
ACM
14 years 5 months ago
2005
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 ...
CCS
2008
ACM
13 years 6 months ago
2008
ACM
We propose an approach for the selective enforcement of access control restrictions in, possibly distributed, large data collections based on two basic concepts: i) flexible autho...
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
There has been an explosion of hyperlinked data in many domains, e.g., the biological Web. Expressive query languages and effective ranking techniques are required to convert this...
ICDCS
2007
IEEE
13 years 8 months ago
2007
IEEE
On-line decision making often involves query processing over time-varying data which arrives in the form of data streams from distributed locations. In such environments typically...