Creates a new comparator to compute the differences from old_model to new_model: if one applies all the computed differences (as #GdaDiff structures) to old_model, the resulting data model should have the same contents as new_model.
Data model to which the modifications should be applied
Target data model.
a new #GdaDataComparator object
Creates a new comparator to compute the differences from old_model to new_model: if one applies all the computed differences (as #GdaDiff structures) to old_model, the resulting data model should have the same contents as new_model.