166 search results - page 14 / 34 » Extending the Search Strategy in a Query Optimizer |
SIGMOD
2009
ACM
14 years 2 months ago
2009
ACM
The state of the art commercial query optimizers employ cost-based optimization and exploit dynamic programming (DP) to find the optimal query execution plan (QEP) without evalua...
COCO
2003
Springer
14 years 18 days ago
2003
Springer
We consider a fundamental problem in data structures, static predecessor searching: Given a subset S of size n from the universe [m], store S so that queries of the form “What i...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
In this paper, we study the problem of effective keyword search over XML documents. We begin by introducing the notion of Valuable Lowest Common Ancestor (VLCA) to accurately and ...
ADBIS
2004
Springer
14 years 24 days 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...
DBISP2P
2004
Springer
14 years 23 days ago
2004
Springer
Peer-to-Peer infrastructures are emerging as one of the important data management infrastructures in the World Wide Web. So far, however, most work has focused on simple P2P networ...