Turning off referential integrity allows you to be more lax about the order tables are imported. You can do the import with referential integrity on (you have to be able to; otherwise you wouldn't ...

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 ...

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 ...