6004 search results - page 85 / 1201 » Parallelizing query optimization |
SIGMOD
2007
ACM
14 years 10 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
ICDE
2009
IEEE
14 years 11 months ago
2009
IEEE
Commercial database systems expose query hints to address situations in which the optimizer chooses a poor plan for a given query. However, current query hints are not flexible eno...
SIGMOD
2005
ACM
14 years 10 months ago
2005
ACM
Research on query optimization has focused almost exclusively on reducing query execution time, while important qualities such as consistency and predictability have largely been ...
TOOLS
1999
IEEE
14 years 2 months ago
1999
IEEE
Path traversals have been recognized as one of the strengths of object-oriented query processing as object retrieval can be carried out through pointer navigation. Apart from path...
KDD
1994
ACM
14 years 2 months ago
1994
ACM
Semantic query optimization can dramatically speed up database query answering by knowledge intensive reformulation. But the problem of how to learn required semantic rules has no...