305 search results - page 16 / 61 » Including Group-By in Query Optimization |
SIGMOD
2001
ACM
14 years 7 months ago
2001
ACM
We study the problem of generating e cient, equivalent rewritings using views to compute the answer to a query. We take the closed-world assumption, in which views are materialize...
SIGMOD
2011
ACM
12 years 10 months ago
2011
ACM
In the database community, work on information extraction (IE) has centered on two themes: how to effectively manage IE tasks, and how to manage the uncertainties that arise in th...
SSDBM
2008
IEEE
14 years 2 months ago
2008
IEEE
Applications requiring the handling of uncertain data have led to the development of database management systems extending the scope of relational databases to include uncertain (p...
CC
2007
Springer
14 years 1 months ago
2007
Springer
DeepWeaver-1 is a tool supporting cross-cutting program analysis and transformation components, called “weaves”. Like an aspect, a DeepWeaver weave consists of a query part, an...
VLDB
1989
ACM
13 years 11 months ago
1989
ACM
: We describe the architecture of a relational databasesystem that is extensible by user-defined data types and operations, including relation operations. The central concept is to...