A method, apparatus and computer-program product for performing a system analysis of a system is disclosed. The system is represented as a plurality of independent model domains, wherein the model domain represents selected ones of a plurality of components and the relationships among the components and the method comprises the steps of representing, as proxies, selected ones of the plurality of components of a first domain, wherein the relationships among the components are limited to direct relationships among adjacent ones of the components, wherein the first domain representation is available to a second domain, providing events occurring in the first domain to the second domain, providing a mapping between a plurality events and a plurality of observable events occurring among the proxy components of the first domain and a plurality of observable events occurring among the components of the second domain, wherein the mapping is represented as a value associating each event with each observable event, and performing the system analysis based on the mapping of events and observable events.