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Methodology of Schema Integration for New Database Applications: A Practitioner's Approach
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Author(s): Joseph Fong (City University of Hong Kong, China), Kamalakar Karlapalem (Hong Kong University of Science & Technology, China), Qing Li (Hong Kong Polytechnic University, China)and Irene Kwan (Hong Kong Polytechnic University, China)
Copyright: 2002
Pages: 25
Source title:
Human Computer Interaction Development & Management
Source Author(s)/Editor(s): Tonya Barrier (Southwest Missouri State University, USA)
DOI: 10.4018/978-1-931777-13-1.ch011
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Abstract
A practitioner’s approach to integrate databases and evolve them so as to support new database applications is presented. The approach consists of a joint bottom-up and top-down methodology; the bottom-up approach is taken to integrate existing database using standard schema integration techniques (B-Schema), the top-down approach is used to develop a database schema for the new applications (T-Schema). The T-Schema uses a joint functional-data analysis. The B-schema is evolved by comparing it with the generated T-schema. This facilitates an evolutionary approach to integrate existing databases to support new applications as and when needed. The mutual completeness check of the T-Schema against B-Schema derive the schema modification steps to be performed on B-Schema to meet the requirements of the new database applications. A case study is presented to illustrate the methodology.
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