410 search results - page 19 / 82 » Optimizing Queries with Materialized Views |
167
Voted
SIGMOD
2007
ACM
15 years 9 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
XSYM
2009
Springer
15 years 4 months ago
2009
Springer
Physical structures, for example indexes and materialized views, can improve query execution performance by orders of magnitude. Hence, it is important to choose the right configu...
SACMAT
2005
ACM
15 years 3 months ago
2005
ACM
We investigate a generalization of the notion of XML security view introduced by Stoica and Farkas [17] and later refined by Fan et al. [8]. The model consists of access control ...
JIIS
2006
14 years 9 months ago
2006
Abstract In recent years, researchers have begun to study inductive databases, a new generation of databases for leveraging decision support applications. In this context, the user...
168
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SIGMOD
2008
ACM
15 years 9 months ago
2008
ACM
Supporting ranking queries in database systems has been a popular research topic recently. However, there is a lack of study on supporting ranking queries in data warehouses where...