NDLI: A semantic framework for heterogeneous database environments

Content Provider	IEEE Xplore Digital Library
Author	Urban, S.D.
Copyright Year	1991
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Arizona State Univ., Tempe, AZ, USA (Urban, S.D.)
Abstract	Describes a semantic framework for the analysis of global view update operations in a heterogeneous database environment. A semantic data model is used to form global conceptual schemas and to represent the meta data of global schemas using a self-describing approach. The semantic model is also used to represent the meta data of local schemas and the mapping between local and global schemas. Set-oriented views of objects are then formed over the global conceptual schema using an object algebra. An approach known as constraint analysis is applied to the analysis of view update operations, identifying side effects and alternative update translations. The constraint analysis process helps to refine the scope of a global view based on the constraints of the underlying local schemas and the types of update operations to be performed. The constraint analysis process also supports semantic query optimization. The approach described in this paper provides a uniform interface for defining global object-oriented views, together with analysis tools.<>
Starting Page	156
Ending Page	163
File Size	597640
Page Count	8
File Format	PDF
ISBN	0818622059
DOI	10.1109/IMS.1991.153699
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-04-07
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer science Algebra Object oriented databases Object oriented modeling Query processing Relational databases Data models Database systems Logic Deductive databases
Content Type	Text
Resource Type	Article

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