2223 search results - page 105 / 445 » Query Optimization in an OODBMS |
101
click to vote
ADBIS
2004
Springer
15 years 5 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
ADBIS
2009
Springer
15 years 6 months ago
2009
Springer
Abstract. Caching data reduces user-perceived latency and often enhances availability in case of server crashes or network failures. DB caching aims at local processing of declarat...
210
click to vote
ICDE
2007
IEEE
16 years 1 months ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
VLDB
1999
ACM
15 years 4 months ago
1999
ACM
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
118
click to vote
DASFAA
2006
IEEE
15 years 6 months ago
2006
IEEE
Abstract. In emerging data stream applications, data sources are typically distributed. Evaluating multi-join queries over streams from different sources may incur large communica...