Abstract
Like data, conceptual schemata change and need to be updated. If not performed with care, updates can cause problems. In this paper, we present a procedure which safely adds a fact type to a conceptual schema. This procedure, as well as being used for simple schema updates, may be applied to design and integration problems. We also present procedures for the safe removal of a fact type, and the safe elimination of redundant information from the conceptual schema.
Cite
CITATION STYLE
Ewald, C. A., & Orlowska, M. E. (1993). A procedural approach to schema evolution. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 685 LNCS, pp. 22–38). Springer Verlag. https://doi.org/10.1007/3-540-56777-1_2
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