Pathway/iTS TCP and Terminal Programming Guide

Designing Your Application
Compaq NonStop™ Pathway/iTS TCP and Terminal Programming Guide—426751-001
2-3
Analyzing Data Flow
Figure 2-1. Data Flow for a Business Task
021CDT .CDD
— Customer ID
— Requested shipping date
— Shipping instructions
— Check customer ID.
— Get customer's name
and address.
— Get order ID.
2.1.
Accept:
— List of ordered items
— Quantity of each item
— Check quantity available
for delivery of each
ordered item.
4.3.
Accept:
— Back-order information
— Calculate order cost.
— Get customer balance
and credit limit.
— Subtract order cost from
balance and check limit.
5.
Accept:
6.
— Confirmation
7.
Accept:
— Subtract quantity ordered
from quantity available.
8.
— Update customer balance.
— Record order data.
9, 10.
— Record order information.
— Record order information.
12.
11.
\WHS
Inventory
Data
\REG
Customer
Information
Order IDs
\REG
Customer
Credit
Data
\REG
Customer
Credit Data/
Order Data
\WHS
Inventory
Data/
Shipping
Data
\CORP
Accounts
Receivable
Data
\WHS
Inventory
Data/
Shipping
Data