D2RQ Platform – Treating Non-RDF Databases as Virtual RDF Graphs
نویسندگان
چکیده
منابع مشابه
Gnowsis Adapter Framework: Treating Structured Data Sources as Virtual RDF Graphs
The integration of heterogenous data sources is a crucial step for the upcoming semantic web – if existing information is not integrated, where will the data come from that the semantic web builds on? In this paper we present the gnowsis adapter framework, an implementation of an RDF graph system that can be used to integrate structured data sources, together with a set of already implemented a...
متن کاملRDF Twig: accessing RDF graphs in XSLT
RDF is a powerful, standard way to represent metadata. XSLT is a powerful, standard way to transform documents. Unfortunately, it isn’t particularly easy to transform RDF graphs with XSLT. This paper describes a new strategy for making RDF amenable to XSLT processing. It introduces RDF Twig, a set of extension functions for Saxon and Xalan that provide a flexible methodology for accessing RDF g...
متن کاملFoundations of RDF Databases
The goal of this paper is to give an overview of the basics of the theory of RDF databases. We provide a formal definition of RDF that includes the features that distinguish this model from other graph data models. We then move into the fundamental issue of querying RDF data. We start by considering the RDF query language SPARQL, which is a W3C Recommendation since January 2008. We provide an a...
متن کاملSeminar Work – RDF Databases
The Semantic Web is the next generation of the World Wide Web, enriching documents with metadata and providing ways to express semantic information in a general way. The basis of the Semantic Web is the Resource Description Framework (RDF), it defines a syntax and rules for metadata about resources. Currently various systems exist that are based on the Resource Description Framework, more syste...
متن کاملWorkload-Aware RDF Partitioning and SPARQL Query Caching for Massive RDF Graphs stored in NoSQL Databases
Governments, corporations, startups, open data initiatives and other organizations are increasingly considering RDF and SPARQL in a broad range of information management scenarios. To reduce SPARQL querying times has been the main issue for virtually all the recent RDF triplestores, yet SPARQL caching techniques have not been broadly considered. In this paper we present Rendezvous, a middleware...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Precedings
سال: 2011
ISSN: 1756-0357
DOI: 10.1038/npre.2011.5660.1