Vanilla MySQL doesn't support any sort of referential integrity. You can use "InnoDB" tables (here) that add that functionality. If you're in a shared hosting ...
This project delivers an enterprise-grade academic management platform for higher education institutions, enabling comprehensive lifecycle management of students, courses, and enrollment operations ...
一部の結果でアクセス不可の可能性があるため、非表示になっています。
アクセス不可の結果を表示する