Data management research at the Middle East Technical University
ACM SIGMOD Record
An MDA-based approach for database re-engineering
Journal of Software Maintenance and Evolution: Research and Practice
Relational Database Migration: A Perspective
DEXA '08 Proceedings of the 19th international conference on Database and Expert Systems Applications
Re-engineering relational databases: the way forward
Proceedings of the 2011 International Conference on Intelligent Semantic Web-Services and Applications
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The object-oriented data model is predicted to be the heart of the next generation of database systems. Users want to move from old legacy databases into applying this new technology that provides extensibility and flexibility in maintenance. However, a major limitation on the wide acceptance of object-oriented databases is the amount of time and money invested on existing database applications, which are based on conventional legacy systems. Users do not want to loose the huge amounts of data present in conventional databases. This paper presents a novel approach to transform a given conventional database into an object-oriented database. It is assumed that the necessary characteristics of the conventional database to be re-engineered are known and available. The source of these characteristics might be the data dictionary and/or an expert in the given conventional database. We implemented a system that builds an understanding of a given conventional database by taking these characteristics as input and produces the corresponding object-oriented database as output. The system derives a graph that summarizes the conceptual model. Links in the graph are classified into inheritance links and aggregation links. This classification leads to the class hierarchy. Finally, we handle the migration of data from the conventional database to the constructed object-oriented database.