32 search results - page 6 / 7 » Improved Query Plans for Unnesting Nested SQL Queries |
BTW
1993
Springer
13 years 9 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...
PVLDB
2008
13 years 4 months ago
2008
OLAP servers based on relational backends typically exploit materialized aggregate tables to improve response times of complex analytical queries. One of the key problems in this ...
SIGMOD
2008
ACM
14 years 5 months ago
2008
ACM
Today's query processing engines do not take advantage of the multiple occurrences of a relation in a query to improve performance. Instead, each instance is treated as a dis...
ICDE
2008
IEEE
14 years 6 months ago
2008
IEEE
Errors in estimating page counts can lead to poor choice of access methods and in turn to poor quality plans. Although there is past work in using execution feedback for accurate c...
SIGMOD
2004
ACM
14 years 5 months ago
2004
ACM
As more and more query processing work can be done in main memory, memory access is becoming a significant cost component of database operations. Recent database research has show...