3652 search results - page 89 / 731 » A study of query length |
ICDE
1991
IEEE
13 years 11 months ago
1991
IEEE
— Constraints play an important role in the efficient query evaluation in deductive databases. In this paper, constraint-based query evaluation in deductive databases is investi...
SIGMOD
2006
ACM
14 years 8 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
WWW
2008
ACM
14 years 8 months ago
2008
ACM
Query result caching is an important mechanism for search engine efficiency. In this study, we first review several query features that are used to determine the contents of a sta...
DASFAA
2008
IEEE
14 years 2 months ago
2008
IEEE
Many Web sources provide forms to allow users to query their hidden data. For instance, online stores such as Amazon.com have search interfaces, using which users can query informa...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
In this paper, we study SQL queries with aggregate subqueries that share common tables and conditions with the outer query. While several approaches can deal with such queries, th...