Context Interchange: Representing and Reasoning About Data Semantics in Heterogeneous Systems (Classic Reprint) - Hardcover

Goh, Cheng Hian

9780332450636: Context Interchange: Representing and Reasoning About Data Semantics in Heterogeneous Systems (Classic Reprint)

Hardcover

ISBN 10: 0332450635 ISBN 13: 9780332450636

Publisher: Forgotten Books, 2018

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Excerpt from Context Interchange: Representing and Reasoning About Data Semantics in Heterogeneous Systems

The context interchange (coin) strategy 44; 48 presents a novel perspective for mediated data access in which semantic conflicts among heterogeneous systems are not identified a prior, but are detected and reconciled by a Context Mediator through comparison of contexts associated with any two systems engaged in data exchange. In this paper, we present a formal characterization and reconstruction of this strategy in a Coin framework, based on a deductive object-oriented data model and language called Coin. The Coin framework provides a logical formalism for representing data semantics in distinct contexts. We show that this presents a well-founded basis for reasoning about semantic disparities in heterogeneous systems. In addition, it combines the best features of loose and tight-coupling approaches in defining an integration strategy that is scalable, extensible and accessible. These latter features are made possible by allowing complexity of the system to be harnessed in small chunks, by enabling sources and receivers to remain loosely-coupled to one another, and by sustaining an infrastructure for data integration.

Keywords: Context, heterogeneous databases, logic and databases, mediators, semantic interoperability.

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