  I have found more people, in this case within my team, who associated MDA only with PIM to code refinement. In this case, this has led to the use of the term Model-Driven Engineering (MDE) for what I have always understood MDA to be: systems composed of models linked together by model transformations. I had a quick read of the MDA guide from OMG, but its 60 pages long, and its hard to get a good impression. I suspect that if you put an 'MDE' system in front of most OMG people, they would still call it MDA. As for me, I'm getting to the point where I don't really care, but intend to keep using MDA for what I think it means. 
