418 search results - page 20 / 84 » Optimizing Large Join Queries in Mediation Systems |
GVD
2003
13 years 9 months ago
2003
Several mapping schemes have recently been proposed to store XML data in relational tables. Relational database systems are readily available and can handle vast amounts of data v...
BTW
2003
Springer
14 years 27 days ago
2003
Springer
Abstract: Optimization of nested queries, in particular finding equivalent “flattened” queries for queries that employ the SQL sub-query construct, has been researched extensiv...
VECPAR
2004
Springer
14 years 1 months ago
2004
Springer
The Human Genetics Unit (HGU) of the Medical Research Council (MRC) in Edinburgh has developed the Edinburgh Mouse Atlas, a spatial temporal framework to store and analyze biologic...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
We present a query architecture in which join operators are decomposed into their constituent data structures (State Modules, or SteMs), and dataflow among these SteMs is managed ...