DBDesigner 4 - Version 4.0.3.28 DBDesigner 4 is a visual database design system that integrates database design, modeling, creation and maintenance into a single, seamless environment.It combines professional features and a clear and simple user interface to offer the most efficient way to handle your databases.DBDesigner 4 is developed and optimized for the open source MySQL-Database to support MySQL users with a powerful and free available design tool.