“…There exists a large body of knowledge related to metamodels for traceability [3,4,9,10,16,19,26,28,48,49,55]. A variety of approaches for storing traceability information are proposed: database schema [6], XML schema [26,49] or metamodels [19,28,46]. We choose an agnostic metamodel representation since we want to address traceability when aspect-orientation, model-driven development and software product line engineering are used in conjunction.…”