“KEAMANAN BASIS DATA BERDASARKAN TEORI HIMPUNAN”. Infotronik : Jurnal Teknologi Informasi dan Elektronika 6, no. 2 (December 29, 2021): 56–60. Accessed July 17, 2026. https://stag-jurnal.usbypkp.ac.id/index.php/infotronik/article/view/695.