HP 3000 Manuals HP 3000 Manuals
Lesson 25 - Using Decision Tables Decision tables allow you to define a series of actions to be performed as the result of the outcome of a series of conditional tests or questions. A decision table can test up to eight questions and execute up to eight actions such as functions, processes and screens. Having defined the questions and actions, you can then define up to 31 relationships. Each relationship defines a combination of results for the questions, the actions to be performed, and the order in which the actions are performed. You can use a decision table to perform the same functions as complex IF-THEN-ELSE structures. A decision table is defined with four screens: * The decision table header screen. * The decision table questions screen. * The decision table actions screen. * The decision table relationships screen. In this application, the decision table tests the status of a number of variables that are set while the product screen is active. The results of these tests determine the appropriate file update actions. The decision table you will create is used by the product_proc process. The process executes this decision table when the user terminates the product_scrn screen. The decision table determines which update function is executed to update the product and option files after data entry. You will also create the functions that add new records to the product and option files.