363 search results - page 21 / 73 » Analyzing Plan Diagrams of Database Query Optimizers |
SSD
2007
Springer
14 years 1 months ago
2007
Springer
We address continuously processing an aggregation join query over data streams. Queries of this type involve both join and aggregation operations, with windows specified on join ...
BTW
1993
Springer
13 years 12 months ago
1993
Springer
It is clearly crucial for the success of object-oriented databases to find effiĆ cient implementations that improve on the performance of relational sysĆ tems, rather than being...
PODS
2001
ACM
14 years 7 months ago
2001
ACM
Database systems frequently have to execute a set of related queries, which share several common subexpressions. Multi-query optimization exploits this, by finding evaluation plan...
SIGMOD
1993
ACM
13 years 11 months ago
1993
ACM
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
Structural join operations are central to evaluating queries against XML data, and are typically responsible for consuming a lion's share of the query processing time. Thus, ...