995 search results - page 109 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
142
click to vote
SIGMOD
2004
ACM
16 years 5 months ago
2004
ACM
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...
154
click to vote
PVLDB
2010
15 years 3 months ago
2010
The need to improve a suboptimal execution plan picked by the query optimizer for a repeatedly run SQL query arises routinely. Complex expressions, skewed or correlated data, and ...
142
click to vote
OOPSLA
2007
Springer
15 years 11 months ago
2007
Springer
Current real-world software applications typically involve heavy use of relational and XML data and their query languages. Unfortunately object-oriented languages and database que...
157
click to vote
ADC
2003
Springer
15 years 10 months ago
2003
Springer
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
130
click to vote
ICDT
2007
ACM
15 years 11 months ago
2007
ACM
Close relationships between XML navigation and temporal logics have been discovered recently, in particular between logics LTL and CTL⋆ and XPath navigation, and between the µ-c...