The final step in program development is to create the program definition. The program definition supplies processing information relevant to the entire program. The online program definition is known as the screen definition (SD) and the batch program definition is known as the batch definition (BD).
The screen definition and the batch definition perform basically the same functions for their programs. This chapter covers each of them separately to give full consideration to their specific requirements.
The screen definition defines program characteristics such as data access, custom code, and process control (which indicates where control passes when processing on the current screen is completed).
The batch definition defines program characteristics such as data access, custom code, work fields, and environment. In fact, the batch definition can be the whole program if no printed report is required. Otherwise, the batch definition builds on the report layout entered in the panel image and panel definition.
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