What is a PDM file? A PowerDesigner Database File, also known as .pdm file, is a file format used by PowerDesigner software from SAP. PowerDesigner is a data modeling and design tool that is used to create and manage database models, business process models and other types of models. The .pdm file contains database model created using PowerDesigner, including tables, relationships, keys, and other metadata related to the database structure. The file format is specific to PowerDesigner and can...