A generation data group(GDG) is a group of related datasets, usually created in chronological order. Using a generation data group to control the creation and retention of this type of dataset group greatly simplifies data management. Before creating the first generation of a generation data group, two steps are required. First, the generation data group base, which contains the rules for managing the group, is defined using AMS. Second, a model must be created for the DCB parameters of the individual datasets to be created.
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