How can i open an existing model from external application

Question

I saw "Ole Automation" examples of creating Physical Database Model elements, but there is no examples of opening an existing DB model. Can someone please help me? My expectations are similar to this pseudo-code:

    PdCommon.Application pd;
    pd = PdCommon.OpenApplication(%Path%);
    ...

Answer 1

pascal was right.

 PdCommon.Application    pdApplication;
 PdPDM.Model             pdModel;

 pdApplication = new PdCommon.Application();
 pdModel = (PdPDM.Model)pdApplication.OpenModel(@"C:\SVN\RAS_DB_Control\trunk\Northwind - MS\Model\Northwind.pdm");