586 search results - page 29 / 118 » Answering Multiple-Item Queries in Data Broadcast Systems |
118
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EDBT
2009
ACM
15 years 4 months ago
2009
ACM
In emerging applications such as location-based services, sensor monitoring and biological management systems, the values of the database items are naturally imprecise. For these ...
230
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ICDE
2007
IEEE
16 years 2 months ago
2007
IEEE
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...
105
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DEXA
2005
Springer
15 years 6 months ago
2005
Springer
In relational database systems a combination of privileges and views is employed to limit a user’s access and to hide non-public data. The data privacy problem is to decide wheth...
123
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WECWIS
2008
IEEE
15 years 7 months ago
2008
IEEE
We present ISENS, a distributed, end-to-end, ontologybased information integration system. In response to a user’s query, our system is capable of retrieving facts from data sou...
119
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VLDB
2004
ACM
15 years 6 months ago
2004
ACM
We investigate the problem of ranking answers to a database query when many tuples are returned. We adapt and apply principles of probabilistic models from Information Retrieval f...