253 search results - page 19 / 51 » A Query Language for EER Schemas |
BDA
2001
13 years 11 months ago
2001
Community Web Portals (e.g., digital libraries, vertical aggregators, infomediaries) have become quite popular nowadays in supporting specific communities of interest on corporate...
VLDB
1998
ACM
14 years 2 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...
WISE
2000
Springer
14 years 2 months ago
2000
Springer
The mediator/wrapper approach is used to integrate data from different databases and other data sources by introducing a middleware virtual database that provides high level abstr...
COOPIS
2002
IEEE
14 years 2 months ago
2002
IEEE
In this paper we propose a mediator architecture for the querying and integration of Web-accessible XML data sources. Our contributions are (i) the definition of a simple but expr...
ICDE
2005
IEEE
14 years 11 months ago
2005
IEEE
Modern information systems often store data that has been transformed and integrated from a variety of sources. This integration may obscure the original source semantics of data ...