Design the following for each section:

1. Functional Model: Use Case Diagram: Customer places order for Purple Widget Customer rents Blue Widget Automatic order placement for Purple Widgets Credit card validation for orders and rentals Payment processing Inventory management

2. Activity Diagram: Customer selects Purple Widget or Blue Widget Customer enters payment information Payment information is validated Order or rental is processed Automatic order placement is triggered when inventory drops below 5% Inventory is updated

3. Use Case Definition: Customer places order for Purple Widget: Customer selects Purple Widget, enters payment information, payment is validated, order is processed, and inventory is updated. Customer rents Blue Widget: Customer selects Blue Widget, enters payment information, payment is validated, rental is processed, and inventory is updated. Automatic order placement for Purple Widgets: When inventory drops below 5%, the system automatically places an order for 2000 Purple Widgets from Elaine's Wholesale Supply Store.

4. Structural Model: Class Diagram: Customer Purple Widget Blue Widget Order Rental Payment Inventory CRC Cards: Customer: Places orders and rents Blue Widgets Purple Widget: Inventory item that can be ordered Blue Widget: Inventory item that can be rented