scholarly journals Working Group on Virtual Data Integration

2016 ◽  
Author(s):  
Dean N. Williams
Keyword(s):  
Data Integration ◽  
Working Group ◽  
Virtual Data

scholarly journals Working Group on Virtual Data Integration

2016 ◽  
Author(s):  
D. N. Williams ◽  
G. Palanisamy ◽  
K. K. van Dam
Keyword(s):  
Data Integration ◽  
Working Group ◽  
Virtual Data

scholarly journals SchizConnect: Virtual Data Integration in Neuroimaging

2015 ◽  
pp. 37-51 ◽  
Author(s):  
Jose Luis Ambite ◽  
Marcelo Tallis ◽  
Kathryn Alpert ◽  
David B. Keator ◽  
Margaret King ◽  
...  
Keyword(s):  
Data Integration ◽  
Virtual Data

Identification of Interface Information for a Virtual Data Integration

2014 ◽  
pp. 89-99 ◽  
Author(s):  
Konstantin Klein ◽  
Marco Franke ◽  
Karl A. Hribernik ◽  
Klaus-Dieter Thoben
Keyword(s):  
Data Integration ◽  
Virtual Data

scholarly journals Intensional and Extensional Views in DL-Lite Ontologies

2021 ◽  
Author(s):  
Marco Console ◽  
Giuseppe De Giacomo ◽  
Maurizio Lenzerini ◽  
Manuel Namici
Keyword(s):  
Knowledge Management ◽  
Computational Complexity ◽  
Data Integration ◽  
Query Optimization ◽  
Data Privacy ◽  
Data Access ◽  
Knowledge Bases ◽  
Data Collections ◽  
Access Data ◽  
Virtual Data

The use of virtual collections of data is often essential in several data and knowledge management tasks. In the literature, the standard way to define virtual data collections is via views, i.e., virtual relations defined using queries. In data and knowledge bases, the notion of views is a staple of data access, data integration and exchange, query optimization, and data privacy. In this work, we study views in Ontology-Based Data Access (OBDA) systems. OBDA is a powerful paradigm for accessing data through an ontology, i.e., a conceptual specification of the domain of interest written using logical axioms. Intuitively, users of an OBDA system interact with the data only through the ontology's conceptual lens. We present a novel framework to express natural and sophisticated forms of views in OBDA systems and introduce fundamental reasoning tasks for these views. We study the computational complexity of these tasks and present classes of views for which these tasks are tractable or at least decidable.

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