MDA Explained: The Model Driven Architecture--Practice and Promise

MDA Explained: The Model Driven Architecture--Practice and Promise

Editorial Reviews
Book Description
For many years, the three of us have been developing software using object-oriented techniques. We started with object-oriented programming languages like C++, Small-talk, and Eiffel. Soon we felt the need to describe our software at a higher level of abstraction. Even before the first object-oriented analysis and design methods like Coad/Yourdon and Object Modeling Technique (OMT) were published, we used our own invented bubble and arrow diagrams. This naturally led to questions like, What does this arrow mean? and What is the difference between this circle and that rectangle? We therefore rapidly decided to use the newly emerging methods to design and describe our software. Over the years we found that we were spending more time on designing our models than on writing code. The models helped us to cope with larger and more complex systems. Having a good model of the software available made the process of writing code easier, and in many cases, even straightforward. In 1997 some of us got involved in defining the first standard for object-oriented modeling called Unified Modeling Language (UML). This was a major milestone that stimulated the use of modeling in the software industry. When the OMG launched its initiative on Model Driven Architecture (MDA), we felt that this was logically the next step to take. People try to get more and more value from their high-level models, and the MDA approach supports these efforts. At that moment we realized that all these years we had been naturally walking the path toward model-driven development. Every bit of wisdom we acquired during our struggle with the systems we had to build fitted in with this new idea of how to build software. It caused a feeling similar to an AHA-experience: Yes, this is it! -;the same feeling we had years before when we first encountered the object-oriented way of thinking, and again when we first read the GOF book on design patterns. We feel that MDA could very well be the next major step forward in the way software is being developed. MDA brings the focus of software development to a higher level of abstraction, thereby raising the level of maturity of the IT industry. We are aware of the fact that the grand vision of MDA, which Richard Soley, the president of the OMG, presents so eloquently, is not yet a reality. However, some parts of MDA can already be used today, while others are under development. With this book we want to give you insight into what MDA means and what you can achieve, both today and in the future. Anneke Kleppe Jos Warmer Wim Bast Soest, the Netherlands, March 2003 032119442XP04072003

From the Back Cover

"Jos Warmer’s work has contributed greatly to the semantics of the UML. From that perspective, and in this book, he offers insight on how one can and can’t use the UML to move to the next level of abstraction in building systems."
—Grady Booch

Experienced application developers often invest more time in building models than they do in actually writing code. Why? Well-constructed models make it easier to deliver large, complex enterprise systems on time and within budget. Now, a new framework advanced by the Object Management Group (OMG) allows developers to build systems according to their core business logic and data—independently of any particular hardware, operating system, or middleware.

Model Driven Architecture (MDA) is a framework based on the Unified Modeling Language (UML) and other industry standards for visualizing, storing, and exchanging software designs and models. However, unlike UML, MDA promotes the creation of machine-readable, highly abstract models that are developed independently of the implementation technology and stored in standardized repositories. There, they can be accessed repeatedly and automatically transformed by tools into schemas, code skeletons, test harnesses, integration code, and deployment scripts for various platforms.

Written by three members of OMG’s MDA standardization committee, MDA Explained gives readers an inside look at the advantages of MDA and how they can be realized. This book begins with practical examples that illustrate the application of different types of models. It then shifts to a discussion at the meta-level, where developers will gain the knowledge necessary to define MDA tools.

Highlights of this book include: