1168 search results - page 45 / 234 » Optimization strategies for complex queries |
ICDT
2001
ACM
14 years 3 months ago
2001
ACM
Abstract. Nearest-neighbor queries in high-dimensional space are of high importance in various applications, especially in content-based indexing of multimedia data. For an optimiz...
DBISP2P
2005
Springer
14 years 4 months ago
2005
Springer
In this work we address the issue of efficient processing of range queries in DHT-based P2P data networks. The novelty of the proposed approach lies on architectures, algorithms, ...
DEXA
2006
Springer
14 years 2 months ago
2006
Springer
Moving range queries over mobile objects are important in many location management applications. There have been quite a few research works in this area. However, all existing solu...
BTW
2005
Springer
14 years 4 months ago
2005
Springer
: Optimizers in modern DBMSs utilize a cost model to choose an efficient query execution plan (QEP) among all possible ones for a given query. The accuracy of the cost estimates de...
SIGMOD
2003
ACM
14 years 10 months ago
2003
ACM
A query optimizer compares alternative plans in its search space to find the best plan for a given query. Depending on the search space and the enumeration algorithm, optimizers v...