XRel: a path-based approach to storage and retrieval of XML documents using relational databases
ACM Transactions on Internet Technology (TOIT)
The Yin/Yang web: XML syntax and RDF semantics
Proceedings of the 11th international conference on World Wide Web
Interpreting XML Documents via an RDF Schema Ontology
DEXA '02 Proceedings of the 13th International Workshop on Database and Expert Systems Applications
Ontology-Based Integration of XML Web Resources
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
Piazza: data management infrastructure for semantic web applications
WWW '03 Proceedings of the 12th international conference on World Wide Web
An Ontology-Based Framework for XML Semantic Integration
IDEAS '04 Proceedings of the International Database Engineering and Applications Symposium
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Some recent initiatives try to take profit from RDF to make XML documents interoperate at the semantic level. Ontologies are used to establish semantic connections among XML languages, and some mechanisms have been defined to query them with natural XML query languages like XPath and XML Query. Generally structure-mapping approaches define a simple translation between trivial XPath expressions and some RDF query language like RDQL; however some XPath constructs cannot be covered in a structure-mapping strategy. In contrast, our work takes the model-mapping approach, respectful with node order, that allows mapping all XPath axis. The obtained XPath implementation has the properties of schema-awareness and IDREF-awareness, so it can be used to exploit inheritance hierarchies defined in one or more XML schemas.