Class Diagram “Architecture View”

This diagram is designed to highlight the overall simple architecture of:

Note1:	Architectural View - This shows a hi-level view of the 3-tier architecture.
Note2:	DBMS Tier Links To: Package Diagram data_management
Note3:	Client Tier Links To: Package Diagram user_interface
Note3:	Middle Tier Links To: Package Diagram problem_domain
Note4:	The dynamics behind the 3-tier architecture can be seen in these sequence diagrams: Links To: Sequence Diagram Initializing GUI from PD, Sequence Diagram Persistent Save, Sequence Diagram Product Scan

Diagram Node Summary
CashSale	Class: Imported. This represents the overall transaction record of the sale.
POSFrame	Class: Imported. This is a sample that was based on the JMCU CashSale component built into the Together tool.
SaleDM	Class: Imported.

Referenced Diagrams
data_management	Package Diagram
problem_domain	Package Diagram: The Problem Domain diagram is where business-level classes reside.
user_interface	Package Diagram
Initializing GUI from PD	Sequence Diagram
Persistent Save	Sequence Diagram
Product Scan	Sequence Diagram: This sequence diagram illustrates how a product is scanned and priced.