Designing a Terminal-Based Interface › Design Objectives › Prerequisites

Prerequisites

Before you begin designing screens, you should have either completed or have an understanding of certain tasks. However, the specific task list and its contents can vary, depending on the information engineering techniques of the life cycle being used.

As you begin your screen design tasks, you can use the list of prerequisite tasks that follows to help you get started. As you gain experience in designing block mode screens for your application, you may choose to use this list as it is, delete some of these tasks, or add others.

This getting started list consists of the following tasks:

• An understanding of the tasks that the user intends to perform with the application, which is usually determined from previous phases of development, such as life cycle analysis using the Entity Life Cycle Analysis tool
• A data model defined with the Data Model tool, Data Model List tool, or the Data Model Browser tool
• One or more procedures defined with the Dialog Design tool
• Views for one or more procedures defined in procedure synthesis using the Dialog Design tool
• A business system defined with the Business System Definition tool