349 search results - page 26 / 70 » Query Rewriting for Semistructured Data |
115
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SIGMOD
2004
ACM
16 years 2 months ago
2004
ACM
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...
117
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WIDM
2003
ACM
15 years 7 months ago
2003
ACM
Query rewriting using views is an essential issue in data integration. A number of algorithms, e.g., the bucket algorithm, the inverse rules algorithm, the SVB algorithm and the M...
105
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EDBTW
2004
Springer
15 years 7 months ago
2004
Springer
In this work, we investigate mechanisms to support data sharing and querying in a peer-to-peer data management system, that is, a peer-to-peer system where each peer manages its ow...
184
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ICDT
2009
ACM
16 years 2 months ago
2009
ACM
We study the problem of querying data sources that accept only a limited set of queries, such as sources accessible by Web services which can implement very large (potentially inf...
209
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SIGMOD
2005
ACM
16 years 2 months ago
2005
ACM
Although integrity constraints have long been used to maintain data consistency, there are situations in which they may not be enforced or satisfied. In this paper, we present Con...