منابع مشابه
Ontology Based Access to Exploration Data at Statoil
Ontology Based Data Access (OBDA) is a prominent approach to query databases which uses an ontology to expose data in a conceptually clear manner by abstracting away from the technical schema-level details of the underlying data. The ontology is ‘connected’ to the data via mappings that allow to automatically translate queries posed over the ontology into data-level queries that can be executed...
متن کاملTemporalizing Ontology-Based Data Access
Ontology-based data access (OBDA) generalizes query answering in databases towards deduction since (i) the fact base is not assumed to contain complete knowledge (i.e., there is no closed world assumption), and (ii) the interpretation of the predicates occurring in the queries is constrained by axioms of an ontology. OBDA has been investigated in detail for the case where the ontology is expres...
متن کاملManaging Datatypes in Ontology-Based Data Access
Using ontologies for the conceptual modeling of a domain of interest is becoming increasingly popular, since ontologies have a formal semantics based on Description Logics (DLs), and since they inherit from modeling languages (like UML) intuitive constructors. Hence, also application scenario where ontologies are proposed as a conceptual view over data repositories, are becoming more and more p...
متن کاملHandling Updates in Ontology-based Data Access
Ontology-based Data Access (OBDA) is gaining importance both scientifically and practically. However, little attention has been paid so far to the problem of updating OBDA systems. This is an essential issue if we want to be able to cope with modifications of data both at the ontology and at the source level, while maintaining the independence of the data sources. In this paper, we propose mech...
متن کاملOntology-based Visual Querying with OptiqueVQS: Statoil and Siemens Cases
In this demo, we present an ontology-based visual query system, namely OptiqueVQS, for querying static and dynamic data sources. The demo will be based on industrial scenarios provided by Statoil ASA and Siemens AG.
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ژورنال
عنوان ژورنال: Journal of Web Semantics
سال: 2017
ISSN: 1570-8268
DOI: 10.1016/j.websem.2017.05.005