313 search results - page 21 / 63 » Semantic Query Optimization for Methods in Object-Oriented D... |
SSD
2001
Springer
15 years 2 months ago
2001
Springer
In this paper we introduce the notion of constrained nearest neighbor queries (CNN) and propose a series of methods to answer them. This class of queries can be thought of as neare...
ADBIS
2004
Springer
15 years 1 months ago
2004
Springer
Abstract. In concurrent database systems, correctness of update transactions refers to the equivalent effects of the execution schedule and some serial schedule over the same set o...
WEBDB
2000
Springer
15 years 1 months ago
2000
Springer
Rewriting queries using views is a powerful technique that has applications in data integration, data warehousing and query optimization. Query rewriting in relational databases i...
92
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DASFAA
2009
IEEE
15 years 1 months ago
2009
IEEE
Abstract. Query expansion has received extensive attention in information retrieval community. Although semantic based query expansion appears to be promising in improving retrieva...
101
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ICDE
2010
IEEE
15 years 9 months ago
2010
IEEE
Keyword search is considered to be an effective information discovery method for both structured and semistructured data. In XML keyword search, query semantics is based on the con...