Asagba, Prince Oghenekaro, and Ngozi Kingsley-Opara. “Comparative Study of Hierarchical, CODASYL and Relational Database”. JBAS publishers 1, no. 1 (September 30, 2022). Accessed April 3, 2025. https://jbasjournals.com/index.php/rsujbas/article/view/4.