This facility allows you to create a report detailing the differences between your MySQL Workbench model, and a live database or script. Select Database, Generate Catalog Diff Report from the main menu to run the Compare and Report Differences in Catalogs wizard.
Having started the wizard the first step is to specify the catalogs you wish to compare. For example, you may simply wish to compare your live database against your current MySQL Workbench model:
You then proceed through the wizard, providing connection information if accessing a live database. The wizard will then produce a catalog diff report showing the differences between the compared catalogs: