276 search results - page 50 / 56 » Answering XML Queries over Heterogeneous Data Sources |
PVLDB
2008
13 years 6 months ago
2008
Data integration systems often provide a uniform query interface, called a mediated schema, to a multitude of data sources. To answer user queries, such systems employ a set of se...
COLCOM
2008
IEEE
14 years 1 months ago
2008
IEEE
Nowadays, increasing needs for information sharing arise due to extensive collaborations among organizations. Organizations desire to provide data access to their collaborators whi...
DKE
2006
13 years 7 months ago
2006
We describe a framework called the Uni-Level Description (ULD) for accurately representing information from a broad range of data models. The ULD extends previous metadata-model a...
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
Dataspace applications necessitate the creation of associations among data items over time. For example, once information about people is extracted from sources on the Web, associa...
BMCBI
2007
13 years 7 months ago
2007
Background: Due to the complex and distributed nature of biological research, our current biological knowledge is spread over many redundant annotation databases maintained by man...