2492 search results - page 210 / 499 » Ontology-based Database Access |
168
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VLDB
2002
ACM
15 years 5 months ago
2002
ACM
Traditional indexes aim at optimizing the node accesses during query processing, which, however, does not necessarily minimize the total cost due to the possibly large number of r...
189
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DBSEC
2011
14 years 9 months ago
2011
Online social networks (OSNs) have experienced tremendous growth in recent years and become a de facto portal for hundreds of millions of Internet users. These OSNs offer attractiv...
258
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GIS
2004
ACM
16 years 7 months ago
2004
ACM
Despite various interoperability recommendations, heterogeneity of Geographic Information Systems (GIS) is still an issue. This led to an increasing need for a data integration sy...
172
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WWW
2004
ACM
16 years 6 months ago
2004
ACM
This paper presents a system for efficient data transformations between XML and relational databases, called XML Data Mediator (XDM). XDM enables the transformation by externalizi...
266
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VLDB
2001
ACM
16 years 6 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessin...