267 search results - page 19 / 54 » Constraint-Based XML Query Rewriting For Data Integration |
125
Voted
PDIS
1996
IEEE
15 years 1 months ago
1996
IEEE
Users today are struggling to integrate a broad range of information sources providing di erent levels of query capabilities. Currently, data sources with di erent and limitedcapa...
WEBI
2001
Springer
15 years 2 months ago
2001
Springer
In the proposed data model for XML databases, an XML element is directly represented as a ground (variable-free) XML expression—a generalization of an XML element by incorporatio...
70
Voted
ENTCS
2006
14 years 9 months ago
2006
Data integration systems provide a uniform query interface (UQI) to multiple, autonomous data sources [4]. This paper presents the universal data model (UDM) that captures the sem...
VLDB
2001
ACM
15 years 2 months ago
2001
ACM
We demonstrate a visual based XML-Relational database system where XML data is managed by commercial RDBMS. A query interface enables users to form path expression based queries a...
91
Voted
EDBT
2002
ACM
15 years 9 months ago
2002
ACM
The problem of finding contained rewritings of queries using views is of great importance in mediated data integration systems. In this paper, we first present a general approach f...