THUẦN, Hồ; HÀ, Hồ Cẩm. An approach to extending the relational database model for handling incomplete information and data dependencies. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 17, n. 3, p. 41–47, 2012. DOI: 10.15625/1813-9663/17/3/2624. Disponível em: https://jcc.vast.vn/jcc/article/view/2624. Acesso em: 5 nov. 2025.