Faqihuddin, A.; Wahyuddin, I.; Nathasia, N. D. Mysql Database Processing Information System Using The System Development Life Cycle (SDLC) Method At Quality Guarantee Agency Working Unit At National University: Mysql Database Processing Information System Using The System Development Life Cycle (SDLC) Method At Quality Guarantee Agency Working Unit At National University. Mantik 2020, 4, 399-406.