995 search results - page 79 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
192
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SIGMOD
2006
ACM
16 years 3 months ago
2006
ACM
Consider an XML view defined over a relational database, and a user query specified over this view. This user XML query is typically processed using the following steps: (a) our t...
228
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ICDE
2006
IEEE
16 years 4 months ago
2006
IEEE
Relational division, also known as small divide, is a derived operator of the relational algebra that realizes a many-to-one set containment test, where a set is represented as a ...
138
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SSDBM
2003
IEEE
15 years 8 months ago
2003
IEEE
Relational index structures, as for instance the Relational Interval Tree, the Relational R-Tree, or the Linear Quadtree, support efficient processing of queries on top of existin...
211
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ICDE
2008
IEEE
16 years 4 months ago
2008
IEEE
We study the problem of computing query results with confidence values in ULDBs: relational databases with uncertainty and lineage. ULDBs, which subsume probabilistic databases, o...
211
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ICDE
2007
IEEE
16 years 4 months ago
2007
IEEE
Skyline query processing has been investigated extensively in recent years, mostly for only one query reference point. An example of a single-source skyline query is to find hotel...