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PVLDB
2008
14 years 11 months ago
2008
Though inevitable for effective cost-based query rewriting, the derivation of meaningful cardinality estimates has remained a notoriously hard problem in the context of XQuery. By...
PODS
2010
ACM
15 years 4 months ago
2010
ACM
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
IADIS
2003
15 years 1 months ago
2003
The cardinality constraint is one of the most important constraints that can be established in a conceptual model. Nevertheless, not all CASE tools for developing database support...
SAC
2010
ACM
15 years 6 months ago
2010
ACM
In GIS and spatial databases, cardinal directions are frequently used as selection and join criteria in query languages. However, most cardinal direction models are only able to h...
JSYML
2008
14 years 11 months ago
2008
Global co-stationarity of the ground model from an 2-c.c. forcing which adds a new subset of 1 is internally consistent relative to an 1-Erdos hyperstrong cardinal and a sufficient...