69 search results - page 6 / 14 » Query Planning for Searching Inter-dependent Deep-Web Databa... |
VLDB
2004
ACM
15 years 3 months ago
2004
ACM
At a fundamental level, the key challenge in data integration is to reconcile the semantics of disparate data sets, each expressed with a different database structure. I argue th...
157
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VLDB
2007
ACM
15 years 10 months ago
2007
ACM
A "plan diagram" is a pictorial enumeration of the execution plan choices of a database query optimizer over the relational selectivity space. We have shown recently tha...
79
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EDBT
2004
ACM
15 years 9 months ago
2004
ACM
Abstract. Non-contiguous subsequence pattern queries search for symbol instances in a long sequence that satisfy some soft temporal constraints. In this paper, we propose a methodo...
VLDB
1995
ACM
15 years 1 months ago
1995
ACM
Traditionally, optimizers are “programmed” to optimize queries following a set of buildin procedures. However, optimizers should be robust to its changing environment to gener...
KDD
2005
ACM
15 years 10 months ago
2005
ACM
Web object is defined to represent any meaningful object embedded in web pages (e.g. images, music) or pointed to by hyperlinks (e.g. downloadable files). Users usually search for...