Answer
See the explanation
Work Step by Step
Here is a structure chart for a simple inventory/accounting system for a small store:
```
1. Main Module
- Inventory Module
- Add Item
- Update Item
- Delete Item
- View Item
- Sales Module
- Record Sale
- Generate Invoice
- Accounting Module
- Track Expenses
- Generate Reports
- Customer Module
- Add Customer
- Update Customer
- Delete Customer
- View Customer
```
Modules that must be modified because of changes in sales tax laws:
- Sales Module: Update the tax calculation logic to comply with the new sales tax laws.
Modules that would need to be changed if the decision is made to maintain a record of past customers for advertising purposes:
- Customer Module: Add functionality to record past customer information, such as purchase history and contact details.
- Sales Module: Modify to include the customer information in sales records for future advertising purposes.
