6650 search results - page 449 / 1330 » Mutating database queries |
226
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SIGMOD
2010
ACM
15 years 7 months ago
2010
ACM
Automated extraction of structured data from Web sources often leads to large heterogeneous knowledge bases (KB), with data and schema items numbering in the hundreds of thousands...
274
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ICDE
2004
IEEE
16 years 8 months ago
2004
IEEE
We describe and evaluate a query minimization technique that applies to XQueries, which are nested, perform arbitrary joins, and freely mix bag and set semantics. These features c...
204
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PODS
2002
ACM
16 years 6 months ago
2002
ACM
In this overview paper we motivate the need for and research issues arising from a new model of data processing. In this model, data does not take the form of persistent relations...
151
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EDBT
2008
ACM
16 years 6 months ago
2008
ACM
Redundancy and minimization of queries are investigated in a well known fragment of XPath that includes child and descendant edges, branches, wildcards, and multiple output nodes....
172
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DASFAA
2007
IEEE
16 years 1 months ago
2007
IEEE
To support secure exchanging and sharing of XML data over the Internet, a myriad of XML access control mechanisms have been proposed. In the setting of node-level fine-grained acc...