Y. F. Al-ward, “AUTOMATIC DISCOVERY OF CANDIDATE IN THE RELATIONAL DATABASES KEYS BY USING ATTRIBUTES SETS CLOSURE”, Al-Nahrain J. Sci., vol. 13, no. 2, pp. 247–255, Jun. 2010, Accessed: Oct. 24, 2026. [Online]. Available: https://www.anjs.edu.iq/index.php/anjs/article/view/1130