Pathmaker Programming Guide

Creating a Custom Pathmaker Application
Pathmaker Application Development Overview
067868 Tandem Computers Incorporated 3–15
Creating a Custom
Pathmaker Application
Custom applications are created to handle the crucial data processing needs of a
business. In addition to performing the usual database functions such as adds,
updates, and deletes, a custom application can also perform calculations, manipulate
data, and enforce integrity rules on critical business data.
The screens for a custom application are similar in appearance to the screens for a DB
requester application; however, the actions that the end user initiates by pressing the
function keys of a custom application can be far more complex than the database
access tasks available in a DB requester application.
A custom Pathmaker application is usually composed of:
One or more custom services (packaged into custom servers)
One or more Transaction (TRNS) requesters
One or more MENU requesters (optional)
The major tasks for creating a custom Pathmaker application, using the bottom-up
approach, are illustrated in Figure 3-5.