Level 0 DFD: Set Beverage Choices System

Admin

Member

Set Beverage Choices System

Payment Gateway

Payment DB

Beverage Setup / Update Details

Beverage Selection Request

Beverage Setup Confirmation

Beverage Status

Level 1 DFD: Decomposition of “Set Beverage Choices System”

Member

Visitor

1.0 Beverage Management

2.0 Beverage Selection

3.0 Order Beverage Processing

Beverage DB

Order DB

Add / Update / Remove Beverage

Beverage Selection Request

Beverage Menu

Beverage Data Request

Update Beverage Details

Payment Record

Beverage Order List