320 search results - page 28 / 64 » A Theory of Spatio-Temporal Database Queries |
PODS
2010
ACM
14 years 20 days 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, ...
ICDE
2009
IEEE
14 years 9 months ago
2009
IEEE
Modern database systems increasingly make use of networked storage. This storage can be in the form of SAN's or in the form of shared-nothing nodes in a cluster. One type of a...
KDD
2005
ACM
14 years 8 months ago
2005
ACM
We present an algorithm for mining tree-shaped patterns in a large graph. Novel about our class of patterns is that they can contain constants, and can contain existential nodes w...
AC
1992
Springer
13 years 11 months ago
1992
Springer
Logic and databases have gone a long way together since the advent of relational databases. Already the rst basic query languages for relational databases beside relational algebra...
IIE
2007
13 years 7 months ago
2007
In recent years a small number of web-based tools have been proposed to help students learn to write SQL query statements and also to assess students’ SQL writing skills. SQLify ...