An Algebraic Graph Transformation Approach for RDF and SPARQL

Implementing Graph Transformation Languages using RDF Storage and SPARQL Queries

The Resource Description Framework (RDF) format has seen signficant interest from industry as a flexible format for graph representation. However, RDF has so far not been widely used in the context of graph rewriting tools. In this paper, we take AToMPM, our research-oriented meta-modelling and graph rewriting tool and extend it by adding RDF-based graph transformation functionality. We address...

Creating an RDF Graph from a Relational Database Using SPARQL

Algebraic Approach to Single-Pushout Graph Transformation

The single-pushout approach to graph transformation interprets a double-pushout transformation rule of the classical algebraic approach which consists of two rotul graph morphisms as a single particll morphism from the left-to the right-hand side. The notion of a double-pushout diagram for the transformation process can then be substituted by a single-pushout diagram in an appropriate category ...

STTL - A SPARQL-based Transformation Language for RDF

The general research question addressed in this paper is How to transform RDF into other languages. This is of prime interest to present data selected and extracted from the Web of data in a format suitable for the user (e.g., HTML or CSV). Moreover, RDF can be viewed as a meta-model to represent on the Web of data other languages and models. The above research question then becomes How to gene...

RDF* and SPARQL*: An Alternative Approach to Annotate Statements in RDF

One of the major criticisms of RDF has been the lack of a convenient way to annotate data with metadata on a per-statement basis. Such annotations are a native feature in other contemporary graph data models (e.g., edge properties in the Property Graph model [7]) and there exist a number of popular use cases, including the annotation of statements with certainty scores, weights, temporal restri...