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.

1. Select Tools > Compare Models to open the Select Models to Compare dialog box.

   The current model is displayed in the Model 2 field.

2. Select a model to compare in the Model 1 list. Only models of the same type in the workspace are available for comparison.
   
   
   
3. [optional] Click the Options button to open the Comparison Options window and specify which objects and properties you want to include in the comparison (see Comparison Options).
4. Click OK to open the Compare Models window, which displays the objects contained within the models or resource files in a tree format, and highlights the differences between them (see Analyzing Differences in the Compare Models Window). You can apply a filter to simplify the list of differences (see Filtering Changes in the Compare and Merge Windows).

• Comparison Options
  The Comparison Options dialog box allows you to specify which types of objects you will compare. By default, all objects are selected for comparison.
• Analyzing Differences in the Compare Models Window
  The Compare Models window allows you to compare the contents of two models.
• Filtering Changes in the Compare and Merge Windows
  You can filter the objects that are shown in the Compare and Merge windows.
• Previewing, Printing, and Saving Comparison Results
  You can preview, save, and export the results of the comparison by clicking the Compare Preview tool to launch the Compare Preview window.