This is the initial analysis model.

Alias:	Initial Analysis Model
Stereotype:	problem domain

Diagram Summary
analysis	Package Diagram: associated with this package

Class Summary
Cashier	Most stores have cashiers that operate the cash registers.
Product	Stores sell products, which have a price.
Sale	A sale is a simple transaction with a sense of who (Cashier), what (SaleDetails), and when (timestamp).
SaleDetail	The "many" side of the sale transaction.