You can compare one schema with a different schema, or you can compare different saved copies of the same schema.The results of the comparison are displayed in the left pane of the Schema Differencing dialog. The results are displayed with respect to the target schema only.
Sometimes all of the differences selected for the target schema will not be committed the first time that you click Commit. This is because of a certain ordering of classes, properties, and reference schemas that does not make it possible to commit them all at once. Therefore it is recommended that you evaluate the differences after clicking Commit to ensure that your changes have taken place. If they have not, you must click Commit again.
If different users have made changes to the same version of a schema and if they have saved these copies, you can run a difference report on that schema. In order to compare the copies of the same schema you have to open the schema in the Tree pane and place the copy of the schema in a different location. You cannot compare two copies of the same schema that are in the same location.
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