An Approach for Model Querying-by-Example Applied to Multi- Paradigm Models

Scenarios for industry-scale multi-paradigm modelling involve analysis,transformation, or fine-grained manipulation of models. These models are often treatedwholly or in part as trees (e.g. XML or XMI documents, or source code). However,existing facilities for accessing and manipulating models as trees is limited. We present anovel approach to model querying-by-example, treating models as trees. The approachabstracts away from platform-specific concerns (e.g. XML), and exploits tree-basedpatterns in expressing queries; the results of queries are also trees, thus providing meansto compose (conjoin) queries without requiring intermediate manipulations

The Role of Dependency Links in Ensuring Architectural View Consistency

Modern systems modelling languages frequently support the use of multiple views in order to provide flexible, extensible, and rich mechanisms for capturing system characteristics. Architectural description languages (ADLs) often provide these capabilities but generally fail to provide support for ensuring view consistency. When using ADLs for building dependable systems, ensuring view consistency is critical so as to provide guarantees about the system as a whole. In this paper, we outline an architectural modelling language, AIM, focusing on its first-class support for dependency links, which are used to ensure view consistency. We illustrate the principles on examples from a real engine control system.

MADES: A Tool Chain for Automated Verification of UML Models of Embedded Systems

The benefits of Model Driven Development may be achieved through exploitation of its potential for automation. Automated model verification is one of the most important examples of this. The usage of automated model verification in everyday software engineering practice is far from widespread. One of the reasons for this is that model designers do not have the necessary background in mathematical methods. An approach where model designers can remain working in their domain while the verification is performed on demand, automatically and transparently, is desirable. We present one such approach using a tool chain built atop mature, popular and widespread technologies. Our approach was verified on industrial experiments from the embedded systems domain in the fields of avionics and surveillance

Formal verification and validation of embedded systems: the UML-based MADES approach

© 2013, Springer-Verlag Berlin Heidelberg. Formal verification and validation activities from the early development phases can foster system consistency, correctness, and integrity, but they are often hard to carry out as most designers do not have the necessary background. To address this difficulty, a possible approach is to allow engineers to continue using familiar notations and tools, while verification and validation are performed on demand, automatically, and transparently. In this paper we describe how the problem of making formal verification and validation tasks more designer-friendly is tackled by the MADES approach. Our solution is based on a tool chain that is built atop mature, popular, and widespread technologies. The paper focuses on the verification and closed-loop simulation (validation) aspects of the approach and shows how it can be applied to significant embedded software systems

Formal verification and validation of embedded systems: the UML-based MADES approach

Formal verification and validation activities from the early development phases can foster system consistency, correctness, and integrity, but they are often hard to carry out as most designers do not have the necessary background. To address this difficulty, a possible approach is to allow engineers to continue using familiar notations and tools, while verification and validation are performed on demand, automatically, and transparently. In this paper we describe how the problem of making formal verification and validation tasks more designer-friendly is tackled by the MADES approach. Our solution is based on a tool chain that is built atop mature, popular, and widespread technologies. The paper focuses on the verification and closed-loop simulation (validation) aspects of the approach and shows how it can be applied to significant embedded software systems