843 search results - page 120 / 169 » Generic Schema Mappings |
106
Voted
IDEAS
2007
IEEE
15 years 8 months ago
2007
IEEE
The problem of data integration (query decomposition, data fragmentation) has been widely studied in literature, but the inherent hierarchical nature of XML data presents problems...
151
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DOLAP
2006
ACM
15 years 7 months ago
2006
ACM
One of the most important tasks performed in the early stages of a data warehouse project is the analysis of the structure and content of the existing data sources and their inten...
126
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SACMAT
2006
ACM
15 years 7 months ago
2006
ACM
In this paper we propose an access control model for the Resource Description Framework (RDF). We argue that existing access control models, like the ones developed for securing e...
121
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ER
2004
Springer
15 years 7 months ago
2004
Springer
Updates over virtual XML views that wrap the relational data have not been well supported by current XML data management systems. This paper studies the problem of the existence of...
110
Voted
VLDB
2004
ACM
15 years 7 months ago
2004
ACM
We consider the problem of data sharing between autonomous data sources in an environment where constraints cannot be placed on the shared contents of sources. Our solutions rely ...