PerfectPets have identified the following new requirements:
(a) Store data on suppliers for surgical, non-surgical, and pharmaceutical supplies.
(b) Store data on invoicing for suppliers.
(c) Store data on staff holidays and staff absences.
(d) Store data relating to all salary payments and deductions made to staff.
(e) Store data relating to staff qualifications, staff reviews, and work history. Provide a revised conceptual, logical, and physical data model to reflect these new requirements. How do these new requirements impact on indexes chosen previously?