Abou El-Seoud S, El-Sofany H, Ghaleb F, Daoud S, AL Ja’am J, Hasna A. XML and Databases for E-Learning Applications. Int. J. Emerg. Technol. Learn. [Internet]. 2007 Oct. 28 [cited 2024 Nov. 24];2(4). Available from: https://online-journals.org/index.php/i-jet/article/view/190