4237 search results - page 317 / 848 » A Data Model for XML Databases |
135
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VLDB
2005
ACM
15 years 10 months ago
2005
ACM
We extend the OLAP data model to represent data ambiguity, specifically imprecision and uncertainty, and introduce an allocation-based approach to the semantics of aggregation qu...
129
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PODS
1993
ACM
15 years 9 months ago
1993
ACM
In this paper, we motivate four di erent user de ned window query classes and derive a probabilistic model for each of them. For each model, we characterize the e ciency of spatia...
167
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DAWAK
2006
Springer
15 years 8 months ago
2006
Springer
More and more integration systems use ontologies to solve the problem of semantic heterogeneities between autonomous databases. To automate the integration process, a number of the...
253
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ICDE
2007
IEEE
16 years 6 months ago
2007
IEEE
We demonstrate MMS, a system for storing and managing a variety of metadata in a simple, elegant and uniform way. The system is based on two observations. First, that the relation...
152
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ICDIM
2009
IEEE
15 years 11 months ago
2009
IEEE
This paper presents a new schema-sharing technique for multitenant applications. Our approach is built on top of the Extension table method and makes use of the native XML data su...