642 search results - page 82 / 129 » Answering XML Queries on Heterogeneous Data Sources |
AICOM
2004
13 years 8 months ago
2004
Abstract. We address the problem of answering queries using expressive symmetric inter-schema constraints which allow to establish mappings between several heterogeneous informatio...
VLDB
2002
ACM
13 years 8 months ago
2002
ACM
We present a novel framework for mapping between any combination of XML and relational schemas, in which a high-level, userspecified mapping is translated into semantically meanin...
ISTA
2001
13 years 10 months ago
2001
: Nowadays, a central topic in database science is the need of an integrated access to large amounts of data provided by various information sources whose contents are strictly rel...
SIGMOD
2004
ACM
14 years 9 months ago
2004
ACM
Increasing popularity of XML in recent years has generated much interest in query processing over graph-structured data. To support efficient evaluation of path expressions, many ...
AIMSA
2010
Springer
13 years 10 months ago
2010
Springer
Abstract. Ontology based data access (OBDA) is concerned with providing access to typically very large data sources through a mediating conceptual layer that allows one to improve ...