708 search results - page 67 / 142 » A Genetic Algorithm for Database Query Optimization |
WWW
2007
ACM
14 years 9 months ago
2007
ACM
As XML database sizes grow, the amount of space used for storing the data and auxiliary data structures becomes a major factor in query and update performance. This paper presents...
DBA
2006
13 years 10 months ago
2006
In order to facilitate query processing, the information contained in data warehouses is typically stored as a set of materialized views. Deciding which views to materialize prese...
SIGMOD
2004
ACM
14 years 9 months ago
2004
ACM
Cardinality estimation during query optimization relies on simplifying assumptions that usually do not hold in practice. To diminish the impact of inaccurate estimates during opti...
ICDE
2005
IEEE
14 years 10 months ago
2005
IEEE
The SQL queries produced in XML-to-SQL query translation are often unnecessarily complex, even for simple input XML queries. In this paper we argue that relational systems can do ...
SIGMOD
2001
ACM
14 years 9 months ago
2001
ACM
Users often need to optimize the selection of objects by appropriately weighting the importance of multiple object attributes. Such optimization problems appear often in operation...