1933 search results - page 7 / 387 » Query Containment Using Views |
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ICDE
2006
IEEE
15 years 10 months ago
2006
IEEE
We present MiniCount, the first efficient sound and complete algorithm for finding maximally contained rewritings of conjunctive queries with count, using conjunctive views with c...
SIGMOD
2004
ACM
15 years 9 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
SIGMOD
1999
ACM
15 years 1 months ago
1999
ACM
We address the problem of query rewriting for TSL, a language for querying semistructured data. We develop and present an algorithm that, given a semistructured query q and a set ...
DILS
2006
Springer
15 years 1 months ago
2006
Springer
The Open Biomedical Ontologies (OBO) is a consortium that serves as a repository of ontologies that are structured like directed acyclic graphs. In this paper we present a language...
FOIKS
2004
Springer
15 years 2 months ago
2004
Springer
Abstract. We give a general framework for approximate query processing in semistructured databases. We focus on regular path queries, which are the integral part of most of the que...