298 search results - page 27 / 60 » Query Rewriting in DL-Lite_^(HN)_horn |
125
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RR
2010
Springer
14 years 9 months ago
2010
Springer
Role-based access control is a standard mechanism in information systems. Based on the role a user has, certain information is kept from the user even if requested. For ontologies ...
172
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SIGMOD
2006
ACM
15 years 11 months ago
2006
ACM
Integration systems typically support only a restricted set of queries over the schema they export. The reason is that the participating information sources contribute limited con...
113
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SSDBM
2009
IEEE
15 years 5 months ago
2009
IEEE
Scientific experiments produce large volumes of data represented as complex objects that describe independent events such as particle collisions. Scientific analyses can be express...
SIGMOD
1999
ACM
15 years 3 months ago
1999
ACM
In this paper we present a mechanism for translating constraint queries, i.e., Boolean expressions of constraints, across heterogeneous information sources. Integrating such syste...
EDBT
2008
ACM
15 years 11 months ago
2008
ACM
Abstract. Monitoring aggregates on IP traffic data streams is a compelling application for data stream management systems. Often, such streaming aggregation queries involve joining...