418 search results - page 7 / 84 » An Optimization Framework for Query Recommendation |
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
Commercial database systems expose query hints to fix poor plans produced by the query optimizer. However, current query hints are not flexible enough to deal with a variety of no...
SIGMOD
1993
ACM
13 years 11 months ago
1993
ACM
Abstract: We propose a framework for the specification of extensible database systems. A particular goal is to implement a software component for parsing and rule-based optimizatio...
PODS
2004
ACM
14 years 7 months ago
2004
ACM
The problem of deciding query containment has important applications in classical query optimization and heterogeneous database systems. Query containment is undecidable for unres...
WWW
2011
ACM
13 years 2 months ago
2011
ACM
As context is acknowledged as an important factor that can affect users’ preferences, many researchers have worked on improving the quality of recommender systems by utilizing ...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
XML database systems are expected to handle increasingly complex queries over increasingly large and highly structured XML databases. An important problem that needs to be solved ...