251 search results - page 42 / 51 » Optimizing recursive queries in SQL |
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Query generators producing sequences of SQL statements are embedded in many applications. As the execution time of such sequences is often far from optimal, their optimization is ...
DOLAP
2000
ACM
13 years 12 months ago
2000
ACM
A multidimensional database can be seen as a collection of multidimensional cubes, from which information is usually extracted by aggregation; aggregated data can be calculated ei...
DOCENG
2009
ACM
14 years 2 months ago
2009
ACM
We study the analysis problem of XPath expressions with counting constraints. Such expressions are commonly used in document transformations or programs in which they select porti...
ADL
2000
Springer
13 years 12 months ago
2000
Springer
The goal of this work is to improve the accuracy (precision and recall) and communication effectiveness of a database system response to a user information request, by utilizing a...
PEPM
2010
ACM
14 years 4 months ago
2010
ACM
We show how to efficiently evaluate generic map-filter-product queries, generalizations of select-project-join (SPJ) queries in relational algebra, based on a combination of two...