An enterprise architecture model is intended to provide a big picture view of your organization and to permit you to decompose your functions, processes, and systems to a certain extent, but it cannot show detailed information about how they are (or will be) implemented. In order to model such information, you will want to use other PowerDesigner models, such as the conceptual, logical, physical data models, business process models, or object-oriented models.
The EAM provides wizards to export EA objects to these other, lower-level models and to import implementation objects to be represented in the EAM.