Generating value from data requires the ability to find, access and make sense of datasets. There are many efforts underway to encourage data sharing and reuse, from scientific …
SPARQL is the standard language for querying RDF data. In this article, we address systematically the formal study of the database aspects of SPARQL, concentrating in its …
The current Web of Data is producing increasingly large RDF datasets. Massive publication efforts of RDF data driven by initiatives like the Linked Open Data movement, and the need …
Abstract SPARQL is the W3C candidate recommendation query language for RDF. In this paper we address systematically the formal study of SPARQL, concentrating in its graph …
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the …
DF Barbieri, D Braga, S Ceri, ED Valle… - … Journal of Semantic …, 2010 - World Scientific
This article defines C-SPARQL, an extension of SPARQL whose distinguishing feature is the support of continuous queries, ie queries registered over RDF data streams and then …
The resource description framework (RDF) is a metadata model and language recommended by the W3C. This paper presents a framework to incorporate temporal …