On the semantic foundations of standard UML 2.0

Abstract. This paper provides an overview of the foundations of the run-time semantics underlying the Unified Modeling Language as defined in revision 2.0 of the official OMG standard. One of the problems with the format used for that standard is that the information relating to semantics is scattered throughout the text making it difficult to obtain a global understanding of how the various fragments fit together. This has led many to incorrectly conclude that UML has little or no semantic content. One of the objectives of this paper is to provide a clear and concise description of the structure and essential content of UML runtime semantics. This can serve as a convenient starting point for researchers who want to work on the problem of UML semantics and, in particular, those who are interested in producing formal models of those semantics.

Modeling and analysis of real-time and embedded systems with UML and MARTE: developing cyber-physical systems

Modeling and Analysis of Real-Time and Embedded Systems with UML and MARTE explains how to apply the complex MARTE standard in practical situations. This approachable reference provides a handy user guide, illustrating with numerous examples how you can use MARTE to design and develop real-time and embedded systems and software. Expert co-authors Bran Selic and Sébastien Gérard lead the team that drafted and maintain the standard and give you the tools you need apply MARTE to overcome the limitations of cyber-physical systems. The functional sophistication required of modern cyber-physica

Using UML for modeling complex real-time systems

The embedded real-time software systems encountered in applications such as telecommunications, aerospace, and defense typically tend to be large and extremely complex. It is crucial in such systems that the software is designed with a sound architecture. A good architecture not only simplifies construction of the initial system, but even more importantly, readily accommodates changes forced by a steady stream of new requirements. In this paper, we describe a set of constructs that facilitate the design of software architectures in this domain. The constructs, derived from field-proven concepts originally defined in the ROOM modeling language, are specified using the Unified Modeling Language (UML) standard. In particular, we show how these architectural constructs can be derived from more general UML modeling concepts by using the powerful extensibility mechanisms of UML. 1 04/08/98 1