Trends in Enterprise Architecture Research and Practice-Driven Research on Enterprise Transformation : 7th Workshop, TEAR 2012, and 5th Working Conference, PRET 2012, Held at The Open Group Conference 2012, Barcelona, Spain, October 23-24, 2012, Proceedings - Stephan Aier, Mathias Ekstedt, Florian Matthes, Erik Proper, Jorge L. Sanz ((Lecture Notes in Business Information Processing))