2492 search results - page 257 / 499 » Ontology-based Database Access |
254
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ICDE
2004
IEEE
16 years 8 months ago
2004
IEEE
Query optimization in data integration requires source coverage and overlap statistics. Gathering and storing the required statistics presents many challenges, not the least of wh...
294
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ICDE
2003
IEEE
16 years 8 months ago
2003
IEEE
In several mobile applications, the data items broadcast are dependent upon one another. However, most prior studies on broadcasting dependent data mainly consider single broadcas...
263
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ICDE
2000
IEEE
16 years 8 months ago
2000
IEEE
In this paper, we study power conservation techniques for multi-attribute queries on wireless data broadcast channels. Indexing data on broadcast channels can improve client filte...
255
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ICDT
2009
ACM
16 years 7 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...
283
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VLDB
2007
ACM
16 years 6 months ago
2007
ACM
Data fusion is the final step of a typical data integration process, after schematic conflicts have been overcome and after duplicates have been correctly identified. We present t...