Optimising XML–RDF Data Integration
نویسنده
چکیده
The Semantic Web provides a wealth of open data in RDF format. XML remains a widespread format for data exchange. When combining data of these two formats several problems arise due to representational incompatibilities. The query language XSPARQL, which is built by combining XQuery and SPARQL, addresses some of these problems. However the evaluation of complex XSPARQL queries by a naive implementation shows slow response times. Establishing an integrated formal model for a core fragment of XSPARQL will allow us to improve performance of query answering by defining query equivalences.
منابع مشابه
Integrating XQuery-enabled SCORM XML Metadata Repositories into an RDF-based E-Learning P2P Network
Edutella is an RDF-based E-Learning P2P network that is aimed to accommodate heterogeneous learning resource metadata repositories in a P2P manner and further facilitate the exchange of metadata between these repositories based on RDF. Whereas Edutella provides RDF metadata repositories with a quite natural integration approach, XML metadata repositories have to overcome considerable incompatib...
متن کاملTowards Data-Integration on the Semantic Web: Querying RDF with Xcerpt
Although RDF is serialized using XML, the many possible syntactic forms and the need for inferencing make it difficult to query RDF using existing XML query languages. Numerous new query languages for RDF with built-in knowledge about the semantics of particular inferencing formalisms like RDF Schema and OWL have been proposed or are currently under development. However most, if not all, are sp...
متن کاملSupporting SPARQL Update Queries in RDF-XML Integration
The Web of Data encourages organizations and companies to publish their data according to the Linked Data practices and offer SPARQL endpoints. On the other hand, the dominant standard for information exchange is XML. The SPARQL2XQuery Framework focuses on the automatic translation of SPARQL queries in XQuery expressions in order to access XML data across the Web. In this paper, we outline our ...
متن کاملA Two-Layered Integration Approach for Product Information in B2B E-commerce
Electronic B2B marketplaces bring together many online suppliers and buyers, each of which can potentially use his own format to represent the products in his product catalog. The marketplaces have to perform non-trivial mappings of these catalogs. In this paper, we analyze the problems which occur during the integration, taking several leading XML-based standards as an example. We advocate a t...
متن کاملA Layered Integration Approach for Product Descriptions in B2B E-commerce
Electronic B2B marketplaces bring together many online suppliers and buyers, each of which can potentially use their own format to represent the products in his product catalog. To mediate the participants the marketplaces have to perform nontrivial mappings of these catalog formats. In this paper we analyze the problems, which occur in defining mapping rules able to translate between these for...
متن کامل