Uniform Variability Management at the Model Level

Varied diagrams are obtained simply by adding variation points (VP) to any graphical formalism. They are intended to deal with product lines, and they encode the differences between products or more precisely the places where the differences are situated. We propose a generic semantics for varied diagrams. The treatment of variation can thus be harmonized in the whole development, e.g. in UML diagrams and program code, supporting thus an integrated Model-Driven Development Approach (MDD) for product lines (PL).