11523 search results - page 1889 / 2305 » Multimedia Database Systems |
181
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EDBT
2006
ACM
16 years 7 months ago
2006
ACM
In authorization-transparent access control, users formulate their queries against the database schema rather than against authorization views that transform and hide data. The Tru...
194
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EDBT
2006
ACM
16 years 7 months ago
2006
ACM
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...
195
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ICDE
2010
IEEE
16 years 6 months ago
2010
IEEE
Searching and extracting meaningful information out of highly heterogeneous datasets is a hot topic that received a lot of attention. However, the existing solutions are based on e...
192
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EDBT
2010
ACM
16 years 1 months ago
2010
ACM
Schemas, and more generally metadata specifying structural and semantic constraints, are invaluable in data management. They facilitate conceptual design and enable checking of da...
188
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ICDE
2009
IEEE
16 years 1 months ago
2009
IEEE
— Large graphs and networks are abundant in modern information systems: entity-relationship graphs over relational data or Web-extracted entities, biological networks, social onl...