ASAGBA, P. O.; KINGSLEY-OPARA, N. Comparative Study of Hierarchical, CODASYL and Relational Database. JBAS publishers, [S. l.], v. 1, n. 1, 2022. Disponível em: https://jbasjournals.com/index.php/rsujbas/article/view/4. Acesso em: 3 apr. 2025.