6650 search results - page 661 / 1330 » Mutating database queries |
241
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CIKM
2010
Springer
15 years 5 months ago
2010
Springer
Recently, several research efforts have addressed answering skyline queries efficiently over large datasets. However, this research lacks methods to compute these queries over un...
184
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WAIM
2010
Springer
15 years 5 months ago
2010
Springer
Materialized views which are derived from base relations and stored in the database are often used to speed up query processing. In this paper, we leverage them in a traceable peer...
227
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ISPAN
2009
IEEE
16 years 1 months ago
2009
IEEE
Abstract—Querying non-conventional data sources is recognized as a major issue in new environments and applications such as those occurring in pervasive computing. A key issue is...
189
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DBPL
2009
Springer
16 years 1 months ago
2009
Springer
In this paper, we revisit the view based security framework for XML without imposing any of the previously considered restrictions on the class of queries, the class of DTDs, and t...
172
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APWEB
2007
Springer
16 years 1 months ago
2007
Springer
XQuery is a powerful language defined by the W3C to query XML documents. Its query functionalities and its expressiveness satisfy the major needs of both the database community an...