A Simple Algorithm for Checking Pattern Query Containment under Shape Expression Schema

Haruna Fujimoto, Nobutaka Suzuki

2022

Abstract

Query containment is one of the major fundamental problems for various kinds of data including RDF/graph, and related to many important practical problems, e.g., determining independence of queries from updates and rewriting queries using views. In this paper, we consider a query containment problem under Shape Expression (ShEx), where query is defined as pattern graph with projection. We adopt a graph-theoretic approach to cope with the containment problem, and propose a simple sound algorithm for solving the problem. In our preliminary experiments, we first verified that the results of our algorithm are correct for all pairs of queries generated in the experiments. We also show that types of ShEx schema can be used to reduce the search space for checking pattern query containment.

Paper Citation

in Harvard Style

Fujimoto H. and Suzuki N. (2022). A Simple Algorithm for Checking Pattern Query Containment under Shape Expression Schema. In Proceedings of the 18th International Conference on Web Information Systems and Technologies - Volume 1: WEBIST, ISBN 978-989-758-613-2, pages 278-285. DOI: 10.5220/0011536800003318

in Bibtex Style

@conference{webist22,
author={Haruna Fujimoto and Nobutaka Suzuki},
title={A Simple Algorithm for Checking Pattern Query Containment under Shape Expression Schema},
booktitle={Proceedings of the 18th International Conference on Web Information Systems and Technologies - Volume 1: WEBIST,},
year={2022},
pages={278-285},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011536800003318},
isbn={978-989-758-613-2},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 18th International Conference on Web Information Systems and Technologies - Volume 1: WEBIST,
TI - A Simple Algorithm for Checking Pattern Query Containment under Shape Expression Schema
SN - 978-989-758-613-2
AU - Fujimoto H.
AU - Suzuki N.
PY - 2022
SP - 278
EP - 285
DO - 10.5220/0011536800003318