Edge-Labelled Graphs and Property Graphs - To the User, More Similar Than Different

Warren, P. and Mulholland, P. (2022). Edge-Labelled Graphs and Property Graphs - To the User, More Similar Than Different. In: Knowledge Graphs and Semantic Web, Communications in Computer and Information Science (Villazón-Terrazas, B.; Ortiz-Rodriguez, F.; Tiwari, S.; Sicilia, M. A. and Martín-Moncunill, D. eds.), Springer, Cham, 1686 pp. 90–105.

DOI: https://doi.org/10.1007/978-3-031-21422-6_7

Abstract

The two dominant paradigms for graph databases, edge-labelled graphs and property graphs, may appear quite different. Yet, to the user, they have strong similarities. A usability study, comparing RDF-star / SPARQL-star and Cypher, found evidence for only limited differences in preferences between the modelling paradigms. This suggests the possibility of a convergence of the two paradigms; indeed in one case (Stardog) this is already happening. We also found little difference between the paradigms in users’ ability to detect valid and non-valid queries. In one specific case, the use of a reverse arrow in Cypher was interpreted significantly more accurately than the ^ symbol in the SPARQL query language; this argues, where possible, for the more intuitive Cypher notation.

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