1. Provide an explanation (and any code you have used) as to how you would implement (or, if you were not able to successfully implement, how you would have implemented) the following constraints (20 marks):
   1. Only Staff in the role of Personnel Officer are permitted to make updates to staff records. When a staff record is updated, the username of the user responsible must be recorded.

Sussan II.SI Store her ENT Sussan II.SI Store her ENT