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DBPL
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. We propose a framework in which query sizes can be estimated from arbitrary statistical assertions on the data. In its most general form, a statistical assertion states t...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...
ADBIS
2010
Springer
13 years 9 months ago
2010
Springer
Cardinal directions have turned out to be very important qualitative spatial relations due to their numerous applications in spatial wayfinding, GIS, qualitative spatial reasoning ...
VLDB
2002
ACM
13 years 7 months ago
2002
ACM
All existing proposals for querying XML (e.g., XQuery) rely on a pattern-specification language that allows (1) path navigation and branching through the label structure of the XM...
WISE
2002
Springer
14 years 11 days ago
2002
Springer
How to extract data from XML documents is an important issue for XML research and development. However, how to view XML documents determines how they can be queried. In this paper...