36 search results - page 4 / 8 » The complexity of reasoning about pattern-based XML schemas |
WEBI
2001
Springer
13 years 12 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...
WWW
2003
ACM
14 years 8 months ago
2003
ACM
The Semantic Web envisions a World Wide Web in which data is described with rich semantics and applications can pose complex queries. To this point, researchers have defined new l...
PODS
2010
ACM
14 years 16 days ago
2010
ACM
The notion of certain answers arises when one queries incompletely specified databases, e.g., in data integration and exchange scenarios, or databases with missing information. W...
ADC
2008
Springer
14 years 1 months ago
2008
Springer
Several XML query languages have been proposed that use XPath expressions to locate data. But XPath expressions might miss some data because of irregularities in the data and sche...
ICDE
1997
IEEE
14 years 8 months ago
1997
IEEE
The need to transform data between heterogeneous databases arises from a number of critical tasks in data management. These tasks are complicated by schema evolution in the underl...