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22nd International Conference on Data Engineering (ICDE'06)
RDF/RDFS-based Relational Database Integration
Atlanta, Georgia
April 03-April 07
ISBN: 0-7695-2570-9
Huajun Chen, Zhejiang University, China
Zhaohui Wu, Zhejiang University, China
Heng Wang, Zhejiang University, China
Yuxin Mao, Zhejiang University, China
We study the problem of answering queries through a RDF/RDFS ontology, given a set of view-based mappings between one or more relational schemas and this target ontology. Particularly, we consider a set of RDFS semantic constraints such as rdfs:subClassof, rdfs:subPropertyof, rdfs:domain, and rdfs:range, which are present in RDF model but neither XML nor relational models. We formally define the query semantics in such an integration scenario, and design a novel query rewriting algorithm to implement the semantics. On our approach, we highlight the important role played by RDF Blank Node in representing incomplete semantics of relational data. A set of semantic tools supporting relational data integration by RDF are also introduced. The approach have been used to integrate 70 relational databases at China Academy of Traditional Chinese Medicine.
Citation:
Huajun Chen, Zhaohui Wu, Heng Wang, Yuxin Mao, "RDF/RDFS-based Relational Database Integration," icde, pp.94, 22nd International Conference on Data Engineering (ICDE'06), 2006
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