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 ...

I am working on a DB project for school and am almost ready to create my tables. I am unsure as to when I turn on referential integrity. Do I create the tables, do my initial data import, and then ...

Referential integrity helps manage data by enforcing validation between related entities. This enforcement follows logical semantics behind the database design -- i.e., an employee can only work for ...