This volume constitutes the proceedings of the second International Conference on Generative Programming and Component Engineering (GPCE 2003), held September 22 25, 2003, in Erfurt, Germany, sponsored by the NetObjectDays German industrial software development event, in cooperation with the ACM SIGPLAN and SIGSOFT societies. GPCE was created as an e?ort to bring - getherresearchersworkingonboththeprogramminglanguagesandthesoftware engineeringsideofprogramgenerationandcomponentengineering. Thecommon theme of program generation and component engineering is the domain-speci?c nature of both...