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» Answering Queries Using Views
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131
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DOLAP
2000
ACM
15 years 8 months ago
Comparing Nested GPSJ Queries in Multidimensional Databases
A multidimensional database can be seen as a collection of multidimensional cubes, from which information is usually extracted by aggregation; aggregated data can be calculated ei...
Matteo Golfarelli, Stefano Rizzi
127
Voted
EDBT
2002
ACM
129views Database» more  EDBT 2002»
16 years 3 months ago
Schema-Driven Evaluation of Approximate Tree-Pattern Queries
Abstract. We present a simple query language for XML, which supports hierarchical, Boolean-connected query patterns. The interpretation of a query is founded on cost-based query tr...
Torsten Schlieder
338
Voted

Tutorial
905views
17 years 3 months ago
Location-aware Query Processing and Optimization
The wide spread use of cellular phones, handheld devices, and GPS-like technology enables location-aware environments where virtually all objects are aware of their locations. Loca...
118
Voted
KES
2004
Springer
15 years 9 months ago
Classification of Fuzzy Data in Database Management System
When the available information is imperfect, it is often desirable to represent it in the database, so that it can be used to answer queries of interest as much as possible. The da...
Deval Popat, Hema Sharda, David Taniar
DEXAW
2007
IEEE
124views Database» more  DEXAW 2007»
15 years 7 months ago
XML Query Optimisation: Specify your Selectivity
The problem of efficiently evaluating XPath and XQuery queries has become increasingly significant since more and more XML data is stored in its native form. We propose a novel op...
Sven Hartmann, Sebastian Link