6974 search results - page 112 / 1395 » Querying Semi-Structured Data |
135
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ICDT
2010
ACM
15 years 7 months ago
2010
ACM
Relational data exchange deals with translating a relational database instance over some source schema into a relational database instance over some target schema, according to a ...
128
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GLOBE
2009
Springer
15 years 8 months ago
2009
Springer
Abstract. We show how to specify and use the metadata for a virtual and relational data integration system under the local-as-view (LAV) approach. We use XML and RuleML for represe...
107
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SIGIR
1996
ACM
15 years 7 months ago
1996
ACM
We present a deductive data model for concept-based query expansion. It is based abstraction levels: the conceptual, the expression and the occurrence level. Concepts and their re...
111
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IIS
2004
15 years 4 months ago
2004
Estimating the result size of a join is an important query optimization problem as it determines the choice of a good query evaluation strategy. Yet, there are few efficient techni...
144
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JACM
2010
15 years 1 months ago
2010
We present a fully dynamic randomized data structure that can answer queries about the convex hull of a set of n points in three dimensions, where insertions take O(log3 n) expect...