344 search results - page 13 / 69 » A Semantic Approach to Query Rewriting for Integrated XML Da... |
DGO
2003
13 years 9 months ago
2003
To query XML data over the Web, query engines need to be able to resolve semantic differences between heterogeneous attributes that are conceptually similar. This demo presents a ...
JASIS
2008
13 years 7 months ago
2008
Data cubes for OLAP (Online Analytical Processing) often need to be constructed from data located in several distributed and autonomous information sources. Such a data integratio...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
The emergence of database languages with side effects, notably for XML, raises significant challenges for database compilers and optimizers. In this paper, we extend an algebra fo...
WWW
2008
ACM
14 years 8 months ago
2008
ACM
A lot of recent research has focused on the content-based dissemination of XML data. However, due to the heterogeneous data schemas used by different data publishers even for data...
SIGMOD
2011
ACM
12 years 10 months ago
2011
ACM
In this paper we consider the problem of answering queries using views, which is important for data integration, query optimization, and data warehouses. We consider its simplest ...