708 search results - page 53 / 142 » A Genetic Algorithm for Database Query Optimization |
IDEAS
2007
IEEE
14 years 3 months ago
2007
IEEE
In this paper we study the problem of deciding whether a regular path query over views in data-integration systems can be re-expressed without recursion. The problem becomes chall...
DOLAP
2006
ACM
14 years 2 months ago
2006
ACM
In this paper we perform an extensive theoretical and experimental study on common synopsis construction algorithms, with emphasis on wavelet based techniques, that take under con...
SIGMOD
2004
ACM
14 years 9 months ago
2004
ACM
Database system architectures are undergoing revolutionary changes. Most importantly, algorithms and data are being unified by integrating programming languages with the database ...
DOCENG
2004
ACM
14 years 2 months ago
2004
ACM
With the wide adoption of XML as a standard data representation and exchange format, querying XML documents becomes increasingly important. However, relational database systems co...
SIGMOD
2010
ACM
13 years 9 months ago
2010
ACM
We develop a compact and efficient reachability labeling scheme for answering provenance queries on workflow runs that conform to a given specification. Even though a workflow run...