4397 search results - page 370 / 880 » Relational Algebra Operations |
196
Voted
SIAMMA
2011
15 years 1 months ago
2011
It has been unknown since the time of Euler whether or not time-periodic sound wave propagation is physically possible in the compressible Euler equations, due mainly to the ubiqui...
184
Voted
PODS
1999
ACM
15 years 10 months ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
154
Voted
CADE
2005
Springer
16 years 6 months ago
2005
Springer
Abstract. We investigate the computational behaviour of `two-dimensional' propositional temporal logics over (N, <) (with and without the next-time operator ?) that are cap...
160
Voted
IJSWIS
2008
15 years 6 months ago
2008
Relational technology has shown to be very useful for scalable Semantic Web data management. Numerous researchers have proposed to use RDBMSs to store and query voluminous RDF dat...
271
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ICDE
2003
IEEE
16 years 7 months ago
2003
IEEE
There has been interest recently in skyline queries, also called Pareto queries, on relational databases. Relational query languages do not support search for "best" tupl...