منابع مشابه
nSPARQL : A Navigational Language for RDF 1
Navigational features have been largely recognized as fundamental for graph database query languages. This fact has motivated several authors to propose RDF query languages with navigational capabilities. In this paper, we propose the query language nSPARQL that uses nested regular expressions to navigate RDF data. We study some of the fundamental properties of nSPARQL and nested regular expres...
متن کاملnSPARQL: A Navigational Language for RDF
Navigational features have been largely recognized as fundamental for graph database query languages. This fact has motivated several authors to propose RDF query languages with navigational capabilities. In particular, we have argued in a previous paper that nested regular expressions are appropriate to navigate RDF data, and we have proposed the nSPARQL query language for RDF, that uses neste...
متن کاملRDF-GL: A SPARQL-Based Graphical Query Language for RDF
In an era of ever-increasing information needs, the ability to query large databases quickly and efficiently has come to play a major part. For a large share, this growing need is addressed by tools and languages aimed at performing complex queries on distributed data. However, the intuitiveness of designing such complex queries has only been addressed to a limited extent, making such tools ava...
متن کاملRUL: A Declarative Update Language for RDF
We propose a declarative update language for RDF graphs which is based on the paradigms of query and view languages RQL and RVL. Our language, called RUL, ensures that the execution of the update primitives on nodes and arcs neither violates the semantics of the RDF model nor the semantics of the given RDFS schema. In addition, RUL supports fine-grained updates at the class and property instanc...
متن کاملTowards a Positive Query Language for RDF
When querying incomplete databases, the possibility of optionally obtaining information -when availableis a distinctive feature. In particular, this feature is present in SPARQL, the language recommended by the W3C for querying Semantic Web data. Unfortunately, its implementation has been shown to have adverse consequences. Two of the most notable are an increase in evaluation complexity and th...
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ژورنال
عنوان ژورنال: Journal of Web Semantics
سال: 2010
ISSN: 1570-8268
DOI: 10.1016/j.websem.2010.01.002