This format was created to store images in RAW format that were created using Epson digital cameras. The image is stored in an uncompressed form, and it can be directly printed on Epson printers. This format can be edited using the Epson PhotoRAW software or using plug-ins in other image editors.
This format was used for storing databases on the Pegasus and Palm PDA devices. Besides images, PDB allowed you to store tables, maps, e-books, and other data in a structured way. Today it has become obsolete and has been replaced by more flexible formats with DRM protection.