525 search results - page 27 / 105 » On Query Algebras for Probabilistic Databases |
192
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ICDE
2006
IEEE
16 years 29 days ago
2006
IEEE
The XPath language incorporates powerful primitives for formulating queries containing nested subexpressions which are existentially or universally quantified. However, even the b...
187
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ICDE
2000
IEEE
16 years 28 days ago
2000
IEEE
Most real-world database applications contain a substantial portion of time-referenced, or temporal, data. Recent advances in temporal query languages show that such database appl...
113
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EDBT
2009
ACM
15 years 6 months ago
2009
ACM
Twig queries have been extensively studied as a major fragment of XPATH queries to query XML data. In this paper, we study PXMLRANK query, (Q, k), which is to rank top-k probabili...
101
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MDM
2009
Springer
15 years 6 months ago
2009
Springer
—A nearest neighbor query is an important notion in spatial databases and moving object databases. In the emerging application fields of moving object technologies, such as mobi...
SSD
2005
Springer
15 years 5 months ago
2005
Springer
We study the problem of answering spatial queries in databases where objects exist with some uncertainty and they are associated with an existential probability. The goal of a thre...