Interpreting the Object Constraint Language

The Object Constraint Language (OCL), which forms part of the UML 1.1. set of modelling notations is a precise, textual language for expressing constraints that cannot be shown in the standard diagrammatic notation used in UML. A semantics for OCL lays the foundation for building CASE tools that support integrity checking of the whole UML models, not just the component expressed using OCL. This paper provides a semantics for OCL, at the same time providing a semantics for classes, associations, attributes and states

Using Alloy to model-check visual design notations

This paper explores the process of validation for the abstract syntax of a graphical notation. We define an unified specification for five of the UML diagrams used by the Discovery Method and, in this document, we illustrate how diagrams can be represented in Alloy and checked against our specification in order to know if these are valid under the Discovery notation.Comment: 8 page

A Pattern Based Model Driven Approach to Model Transformations

The OMG's Model Driven Architecture (MDA) initiative has been the focus of much attention in both academia and industry, due to its promise of more rapid and consistent software development through the increased use of models. In order for MDA to reach its full potential, the ability to manipulate and transform models { most obviously from the Platform Independent Model (PIM) to the Platform Speci_c Models (PSM) { is vital. Recognizing this need, the OMG issued a Request For Proposals (RFP) largely concerned with ending a suitable mechanism for transforming models. This paper outlines the relevant background material, summarizes the approach taken by the QVT-Partners (to whom the authors belong), presents a non-trivial example using the QVT-Partners approach, and finally sketches out what the future holds for model transformations

A model driven approach to building implementable model transformations

The OMG's Model Driven Architecture (MDA) initiative has been the focus of much attention in both academia and industry, due to its promise of more rapid and consistent software development through the increased use of models. In order for MDA to reach its full potential, the ability to manipulate and transform models { most obviously from the Platform Independent Model (PIM) to the Platform Specifc Models (PSM) { is vital. Recognizing this need, the OMG issued a Request For Proposals (RFP) largely concerned with finding a suitable mechanism for transforming models. This paper outlines the relevant background material, summarizes the approach taken by the QVT-Partners (to whom the authors belong), presents a non-trivial example using the QVT-Partners approach, and finally sketches out what the future holds for model transformations

VETESS : IDM, Test et SysML

Selected paper from the 7-th NEPTUNE WorkshopNational audienceIl apparaît souvent que les processus d'ingénierie système sont en fait décomposés en phases discontinues oùtrop peu d'informations sont partagées entre les différentes équipes, par exemple entre les équipes de design et de tests.Cette faiblesse peut être palliée par l’utilisation de modèles de spécifications qui jouent alors le rôle de référentiel pourl’ensemble des équipes participant au cycle de vie du logiciel. Ce type de modèle est couramment utilisé comme basedans les activités de conception, de vérification, ou encore de test. Le test basé sur les modèles est une approcheoriginale où sont automatiquement générés des cas de test et des scripts de test exécutables à partir d'une spécificationdu système sous test. Cette spécification prend la forme d'un modèle comportemental, permettant ainsi au générateur detests de déterminer, d'une part, quels sont les contextes d'exécution pertinents et, d'autre part, de prédire les effets sur lesystème de ces exécutions. Le but du projet VETESS est de rendre possible cette approche pour valider les systèmesembarqués automobiles. Il s’agit ainsi de mettre en œuvre et d’outiller un processus automatique permettant de dériver,d'un modèle de spécification décrit avec un sous-ensemble du langage de modélisation SysML, des cas de test, et deproduire ensuite les scripts de test correspondants à exécuter sur banc de test automobiles

Ontologies and Unified Modeling Language: an approach to representation of domains of knowledge

This article emphasizes the use of Unified Modeling Language, UML in the specification of models based on ontologies in the representation of domains of knowledge, emphasizing the importance of semantic and of treatment of standardized language so the knowledge of the domain can be organized and shared. Finally, this article aims to establish a connection between the themes: the object oriented modeling and ontologies.Este artigo destaca o uso da Unified Modeling Language, UML na especificação de modelos baseados em ontologias na representação de domínios de conhecimento, enfatizando a importância da semântica e do tratamento da linguagem padronizada para que o conhecimento do domínio possa ser organizado e compartilhado. Finalmente, este artigo tem como objetivo estabelecer uma conexão entre as temáticas: modelagem orientada a objetos e ontologias