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SIGMOD
1994
ACM
15 years 4 months ago
1994
ACM
In this paper, we propose a novel approach for estimating the record selectivities of database queries. The real attribute value distribution is adaptively approximated by a curve...
VLDB
1998
ACM
15 years 4 months ago
1998
ACM
The size of The Boeing Company posts some stringent requirements on data warehouse design and implementation. We summarize four interesting and challenging issues in developing ve...
ER
2006
Springer
15 years 1 months ago
2006
Springer
This paper reports an empirical study that used computer science major students as experimental subjects to evaluate the productivity and the reproducibility of RmFFP. This is a fu...
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ER
2008
Springer
15 years 1 months ago
2008
Springer
In a series of publications, we have proposed a foundational system of ontological categories which has been successfully used to evaluate and improve the quality of conceptual mod...
PODS
2001
ACM
16 years 5 hour ago
2001
ACM
Assume that each object in a database has m grades, or scores, one for each of m attributes. For example, an object can have a color grade, that tells how red it is, and a shape g...