272 search results - page 41 / 55 » SQL Queries Over Unstructured Text Databases |
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Real-world data -- especially when generated by distributed measurement infrastructures such as sensor networks -- tends to be incomplete, imprecise, and erroneous, making it impo...
ICDE
2012
IEEE
11 years 9 months ago
2012
IEEE
— Accurate query performance prediction (QPP) is central to effective resource management, query optimization and query scheduling. Analytical cost models, used in current genera...
SSDBM
2005
IEEE
14 years 28 days ago
2005
IEEE
This paper introduces a framework for Phenomena Detection and Tracking (PDT, for short) in sensor network databases. Examples of detectable phenomena include the propagation over ...
ICDE
2008
IEEE
14 years 8 months ago
2008
IEEE
Abstract-- We present COLR-Tree, an abstraction layer designed to support efficient spatio-temporal queries on live data gathered from a large collection of sensors. We use COLR-Tr...
ICDE
2003
IEEE
14 years 8 months ago
2003
IEEE
The XML Wrapper is a new feature of the federated database capabilities of DB2/UDB v8. It enables users and applications to issue SQL queries against XML data from a variety of so...