Sciweavers

2063 search results - page 21 / 413
» Containment of Aggregate Queries
Sort
View
ICDE
2010
IEEE
273views Database» more  ICDE 2010»
14 years 9 months ago
WikiAnalytics: Ad-hoc Querying of Highly Heterogeneous Structured Data
Searching and extracting meaningful information out of highly heterogeneous datasets is a hot topic that received a lot of attention. However, the existing solutions are based on e...
Andrey Balmin, Emiran Curtmola
SSD
2007
Springer
171views Database» more  SSD 2007»
14 years 4 months ago
Transformation of Continuous Aggregation Join Queries over Data Streams
We address continuously processing an aggregation join query over data streams. Queries of this type involve both join and aggregation operations, with windows specified on join ...
Tri Minh Tran, Byung Suk Lee
SIGMOD
2010
ACM
281views Database» more  SIGMOD 2010»
14 years 2 months ago
Continuous sampling for online aggregation over multiple queries
In this paper, we propose an online aggregation system called COSMOS (Continuous Sampling for Multiple queries in an Online aggregation System), to process multiple aggregate quer...
Sai Wu, Beng Chin Ooi, Kian-Lee Tan
IEEEPACT
1999
IEEE
14 years 2 months ago
Containers on the Parallelization of General-Purpose Java Programs
Automatic parallelization of general-purpose programs is still not possible in general in the presence of irregular data structures and complex control-flows. One promising strate...
Peng Wu, David A. Padua
WISE
2002
Springer
14 years 2 months ago
Optimized Translation of XPath into Algebraic Expressions Parameterized by Programs Containing Navigational Primitives
We propose a new approach for the efficient evaluation of XPath expressions. This is important, since XPath is not only used as a simple, stand-alone query language, but is also ...
Sven Helmer, Carl-Christian Kanne, Guido Moerkotte