In 1998 , he received his computer science degree for his thesis ( paper ) `` Prozeßkettenmodellierung am Beispiel der Gießwerkzeugentwicklung und prototypische Implementierung auf Basis des EDM/PDM -- Systems Metaphase '' ( An example of process chain modelling in casting tool development and prototype implementation on basis of the EDM/PDM -- Systems Metaphase ) .
In 1998 , he received his computer science degree for his thesis ( paper ) `` Prozeßkettenmodellierung am Beispiel der Gießwerkzeugentwicklung und prototypische Implementierung auf Basis des EDM/PDM - Systems Metaphase '' ( An example of process chain modelling in casting tool development and prototype implementation on basis of the EDM/PDM - Systems Metaphase ) .