A formal design language for real-time systems with data

AORTA has been proposed as an implementable real-time language for concurrent systems where event times, rather than values of data, are critical. In this paper we describe how to use AORTA with a formal data model, allowing integration with a variety of model-based data specification languages. Example definitions are given of time-critical systems with important data attributes. A development technique and supporting software tools for AORTA are also described.