2674 search results - page 274 / 535 » Data Models and Query Languages for Spatial Databases |
189
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VLDB
1995
ACM
15 years 10 months ago
1995
ACM
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering and query rewrite (JOQR) followed by parallelization. We focus on t...
269
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ICDE
2003
IEEE
16 years 8 months ago
2003
IEEE
Despite the recent proliferation of work on semistructured data models, there has been little work to date on supporting uncertainty in these models. In this paper, we propose a m...
181
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MMS
2002
15 years 6 months ago
2002
An intelligent annotation-based video data model called Smart VideoText is introduced. It utilizes the conceptual graph knowledge representation formalism to capture the semantic a...
144
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GIS
2010
ACM
15 years 5 months ago
2010
ACM
The growing popularity of online Earth visualization tools and geo-realistic games and the availability of high resolution terrain data have motivated a new class of queries to th...
188
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SSDBM
2008
IEEE
16 years 1 months ago
2008
IEEE
Abstract. Existing approaches to the management of streaming positional updates generally assume that all active user requests have equal importance, ignoring the possibility of an...