ObjectGen is a tool for generating test objectives from use cases. ValueGen is a tool for generating operational variables and combination of values from use cases. Although ValueGen needs the artefacts generated by ObjectGen, both tools are independent.
J. Warmer, and A. Kleppe. Addison Wesley, 2. A. edition, (2003)MR: Referenz für OCL
Wertvoll: Es wird gezeigt wie mit OCL Modelle gebaut werden.
MDA eher nur am Rande erklärt
Wichtigster Satz (Kapitel 3.2):
The use of OCL strongly relies on the types (classes, datatypes, and so on) defined in a UML class diagram. This diagram should be build first..