Istituto di Scienza e Tecnologie dell'Informazione     
Castelli D., Pisani S. A transformational approach to correct schema refinements. In: 17th International Conference on Conceptual Modeling - ER'98. (Singapore, November 16-19 1998). Proceedings, pp. 226 - 240. T.W. Ling, S. Ram, M.L. Lee (Eds.) (eds.). (Lecture Notes in Computer Science, vol. 1507). Springer, 1998.
This paper extends a database schema transformation lan- guage, called Schema Re nement Language, with a composition operator and a rule for deriving the conditions under which a composed trans-formation is guaranteed to produce a correct schema refinement. The framework that results from this extension can be exploited for improv-ing the reliability of the database schema design also when other design frameworks are used.
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