Looking at referential integrity again, what would happen if you tried to delete store number $1$ from the store table?

You can delete it$,$ but all the employees at store number $1$ would automatically be deleted.

You can delete it$,$ but then all employees at store number $1$ would not be related properly to any store in the database.

You wouldn't be able to because there are employees that belong to that store. You'd have to delete all those employees at store number $1$ first before you could delete store number $1.$