PowerDesigner provides powerful tools for comparing models and merging them.
Comparing Models
You can compare the content of two PowerDesigner models or two resource files of the same type at any time. You may want to compare models or resource files to review evolutions in models or resources manipulated by different development teams or to evaluate the differences that exist between the models or resources before merging them.
Merging Models
You can merge the content of two PowerDesigner models or two resource files of the same type at any time.