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A Comprehensive Guide Through the Italian Database Research Over the Last 25 YearsFirst-Order Ontology Mediated Database Querying via Query Reformulation

A Comprehensive Guide Through the Italian Database Research Over the Last 25 Years: First-Order... [We address the problem of query answering with ontologies over databases. We consider first-order ontology systems playing the role of a conceptual model of a database represented as a classical finite relational store, either with an open world or a closed world reading. Queries over the conceptual signature are reformulated into queries over the database signature, so to get the same answer directly via SQL relational database technology. We consider two distinct approaches to reformulation, perfect and exact reformulation. We discuss advantages and disadvantages of each of the two approaches, and we report on some significant results appeared in the literature.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

A Comprehensive Guide Through the Italian Database Research Over the Last 25 YearsFirst-Order Ontology Mediated Database Querying via Query Reformulation

Part of the Studies in Big Data Book Series (volume 31)
Editors: Flesca, Sergio; Greco, Sergio; Masciari, Elio; Saccà, Domenico
Calvanese, Diego; Franconi, Enrico
Springer Journals — May 31, 2017
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16 pages

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Publisher
Springer International Publishing
Copyright
© Springer International Publishing AG 2018
ISBN
978-3-319-61892-0
Pages
169 –185
DOI
10.1007/978-3-319-61893-7_10
Publisher site
See Chapter on Publisher Site

Abstract

[We address the problem of query answering with ontologies over databases. We consider first-order ontology systems playing the role of a conceptual model of a database represented as a classical finite relational store, either with an open world or a closed world reading. Queries over the conceptual signature are reformulated into queries over the database signature, so to get the same answer directly via SQL relational database technology. We consider two distinct approaches to reformulation, perfect and exact reformulation. We discuss advantages and disadvantages of each of the two approaches, and we report on some significant results appeared in the literature.]

Published: May 31, 2017

Keywords: Description Logic; Canonical Model; Conjunctive Query; Original Query; Query Answering

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