Good book so far. I'm getting the hang of it until now. On page 286 it says
"After creating the foreign key, make a quick test to ensure that the relationship is indeed enforced. Try adding an employee, but set the person's DepartmentID to 123."
I followed along in the book exactly as stated prior to this, but did not get the error. It allowed me to enter the "123" with no problem. I went to the next record to make sure that the data was taken, but it's just not happening. What did I forget?