Authors: Antonio L. Furtado, Karin K. Breitman, Luiz André P. Paes Leme, Marco A. Casanova, Tanara Lauschner
Tags: 2009, conceptual modeling, Vânia M. P. Vidal
In this paper, we address the problem of changing the constraints of a mediated schema M to accommodate the constraints of a new export schema E 0. We first show how to translate the constraints of E 0 to the vocabulary of M, creating a set of constraints C 0 in such a way that the schema mapping for E 0 is correct. Then, we show how to compute the new version of the constraints of M to accommodate C 0 so that all schema mappings, including that for E 0, are correct. We solve both problems for subset and cardinality constraints and specific families of schema mappings.Read the full paper here: https://link.springer.com/chapter/10.1007/978-3-642-04840-1_21
