Query representation and management in a multiparadigmatic visual query environment |
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Authors: | Tiziana Catarci Shi Kuo Chang Giuseppe Santucci |
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Affiliation: | (1) Dipartimento di Informatica e Sistemistica Università di Roma La Sapienza, Via Salaria, 113-00198 Roma, Italy;(2) Department of Computer Science, University of Pittsburgh, 15260 Pittsburgh, PA |
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Abstract: | We propose a framework for database querying providing the user with several interaction paradigms based on different (i.e., form-based, diagrammatic, iconic, and hybrid) visual representations of the database. A unified model, namely the Graph Model, is used as the common underlying model, in terms of which databases expressed in the most common data models can be easily converted. Graph Model databases can be queried by means of the multiparadigmatic interface. The semantics of the query operations is formally defined in terms of the Graphical Primitives. Such a formal approach enables the query manager to maintain the same query consistently in any representation. In the proposed multiparadigmatic environment, the user can switch from one interaction paradigm to another during query formulation, so that the most suitable query representation can be found. |
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Keywords: | Visual query multiparadigmatic user interface data model query consistency |
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