2514 search results - page 139 / 503 » On the Computation of Approximations of Database Queries |
250
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SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
This paper investigates a class of transform queries proposed by XQuery Update [6]. A transform query is defined in terms of XML update syntax. When posed on an XML tree T, it ret...
170
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VLDB
2002
ACM
15 years 6 months ago
2002
ACM
The cost of a query plan depends on many parameters, such as predicate selectivities and available memory, whose values may not be known at optimization time. Parametric query opt...
255
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VLDB
2007
ACM
16 years 6 months ago
2007
ACM
Record matching is the task of identifying records that match the same real world entity. This is a problem of great significance for a variety of business intelligence applicatio...
178
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SIGMOD
2004
ACM
16 years 6 months ago
2004
ACM
Querying XML data is a well-explored topic with powerful databasestyle query languages such as XPath and XQuery set to become W3C standards. An equally compelling paradigm for que...
162
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CRYPTO
2000
Springer
15 years 10 months ago
2000
Springer
Private information retrieval (PIR) enables a user to retrieve a data item from a database, replicated among one or more servers, while hiding the identity of the retrieved item. ...