Interactive modeling and simulation of transaction flow or network models using the ADA simulation support environment

The Ada Simulation Support Environment (ASSE) is a software system, with the purpose to support the development and maintenance of simulation models written in Ada throughout their life cycle. We describe here the transaction flow or network part of the ASSE, which allows to build models like in GPSS or SLAM. Our view of such models is slightly different from that of the above mentioned languages, which is demonstrated in detail by the server/resource process. The design stres ses modular top-down development using submodels. Models can be developed and tested interactively.