1042 search results - page 43 / 209 » Constraint Databases, Data Structures and Efficient Query Ev... |
CCS
2008
ACM
13 years 9 months ago
2008
ACM
We propose an approach for the selective enforcement of access control restrictions in, possibly distributed, large data collections based on two basic concepts: i) flexible autho...
DASFAA
2009
IEEE
13 years 11 months ago
2009
IEEE
Abstract. The suppression scheme is a solution for limited energy constraints in sensor networks. Temporal suppression, spatial suppression and spatio-temporal suppression are prop...
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
There has been an explosion of hyperlinked data in many domains, e.g., the biological Web. Expressive query languages and effective ranking techniques are required to convert this...
ER
2007
Springer
14 years 1 months ago
2007
Springer
XML Schema supports the specification of occurrence constraints by declaring values for its min/maxOccurs attributes. These constraints are structural in the sense that they rest...
VLDB
2007
ACM
14 years 8 months ago
2007
ACM
An optimization query asks for one or more data objects that maximize or minimize some function over the data set. We propose a general class of queries, model-based optimization ...