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Bùi Thị Thúy Hiền


In this paper, we apply the concept of model introduced in [2] to define extended relational algebra operators. It is proved that these extensions have properties which are formally stated as being adequate and precise.

DOI: https://doi.org/10.15625/1813-9663/15/2/7764

Journal of Computer Science and Cybernetics ISSN: 1813-9663

Published by Vietnam Academy of Science and Technology