708 search results - page 77 / 142 » Optimizing SQL Queries over Text Databases |
WWW
2003
ACM
14 years 2 months ago
2003
ACM
Support for temporal text-containment queries (query for all versions of documents that contained one or more particular words at a particular time t) is of interest in a number of...
PVLDB
2010
13 years 7 months ago
2010
Recently, there has been increasing interest in extending relational query processing to include data obtained from unstructured sources. A common approach is to use stand-alone I...
CIKM
2005
Springer
14 years 2 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
PODS
2000
ACM
14 years 1 months ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Errors in estimating page counts can lead to poor choice of access methods and in turn to poor quality plans. Although there is past work in using execution feedback for accurate c...