651 search results - page 87 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
SIGMOD
2010
ACM
13 years 9 months ago
2010
ACM
Histograms have been widely used for fast estimation of query result sizes in query optimization. In this paper, we propose a new histogram method, called the Skew-Tolerant Histog...
EDBT
2011
ACM
13 years 17 days ago
2011
ACM
Equi-depth histograms represent a fundamental synopsis widely used in both database and data stream applications, as they provide the cornerstone of many techniques such as query ...
EDBT
2002
ACM
14 years 9 months ago
2002
ACM
For a spatial database management system, it is an important goal to minimize the I/O-cost of queries and other operations. Several page-replacement strategies have been proposed a...
ICDCS
2007
IEEE
14 years 27 days ago
2007
IEEE
This paper presents GeoGrid, a geographical location service overlay network system, for providing scalable location-based services to a large and growing number of mobile users. ...
PDIS
1994
IEEE
14 years 1 months ago
1994
IEEE
We propose a new client-side data-caching scheme for relational databases with a central server and multiple clients. Data are loaded into each client cache based on queries execut...