An executable system specification to support the JSD methodology

The authors present an experimental executable system specification that supports the Jackson system development methodology. The immediate advantage of making a rigorous system specification executable is that it becomes a verifiable system prototype. They show that the JSD specification is a restricted object system. They use Prolog to implement and execute the specification. The specification can be transformed into a system design if a set of transformation rules exists. Such transformation rules for the JSD approach are discussed