ObjectOry is a complete environment (created by Ivar Jacobson) for the development of large software systems with an object-oriented approach. This book fully describes ObjectOry, showing how it can lead to a more industrialized approach to software development. The authors demonstrate how object-oriented techniques can be applied to the whole software life-cycle. Application section covers examples from such areas as telecoms, process control, business application, and System Software which describes how parts of a CASE System are modelled using ObjectOry.

Dr. Ivar Jacobson,Vice President of Business Engineering, is the inventor of the OOSE method, and he is also the founder of Objectory AB in Sweden, which recently merged with Rational Software Corporation. Dr. Jacobson is the principal author of two influential and best-selling books Object-Oriented Software Engineering--A Use Case Driven Approach (Computer Language Productivity award winner in 1992) and The Object Advantage--Business Process Reengineering with Object Technology. He has also authored several widely referenced papers on object technology. One of the most famous papers is his first OOPSLA '87 paper entitled "Object-Oriented Development in an Industrial Environment," which presented the first truly object-oriented method ever published. Ivar Jacobson's use-case driven approachhas had a very strong impact on the entireOOAD industry, and he himself has become one of its "icons." Consequently, he isa frequently invited keynote speaker and panelist, debating OOAD topics withcolleagues and methodologists such as Grady Booch, Jim Rumbaugh, StevenMellor, and Rebecca Wirfs-Brock at major OO conferences around the world.

He is well known for his pioneering work and more than 20 years of experience inusing object methods for the design of large real-time systems. His earlyobject-based design technique has evolved into the international standardITU(formerly CCITT)/SDL.

Dr. Jacobson also regularly serves on the OOPSLA, ECOOP, and TOOLSprogram committees, and he is a member of the advisory board of the Journal ofObject-Oriented Programming.

In 1994, Ivar Jacobson received the first Swedish Computer Association (SCA)award (the Kjell Hultman prize) for "extraordinary achievement in promotingefficiency and productivity in the development and use of informationtechnology."

Patrik Jonsson works at Rational Software Corporation in Sweden as a Senior Consultant where he has been developing the architecture and method of the Objectory process with a current focus on reuse and user interface development.

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This is a book on industrial system development using object-oriented techniques. It is not a book on object-oriented programming. We are convinced that the big benefits of object orientation can be gained only by the consistent use of object orientation throughout all steps in the development process. Therefore the emphasis is placed on the other parts of development such as analysis, design and testing. You will benefit from this book if you are a system developer seeking ways to improve in your profession. If you are a student with no pervious experience in development methods, you will learn a robust framework which you can fill with details as you take part in future development projects. Since the focus on the text is on development, the book will be convenient to use in combination with other texts on object-oriented programming. Many examples illustrate the practical application of analysis and design techniques. From this book you will get a thorough understanding of how to use object orientation as well as the basic technique throughout the development process. You will learn the benefits of seamless integration between the different development steps and how the basic object-oriented characteristics of class, inheritance and encapsulation are used in analysis, construction and testing. With this knowledge you are in a much better position to evaluate and select the way to develop your next data processing system. Even though object orientation is the main theme of this book, it is not a panacea for successful system development. The change from craftsmanship to individualization does not come with the change to a new technique. The change must come on a more fundamental level which also includes the organization of the complete development process. Objectory is one example of how this can be done. This book does not present Objectory. What we present is the fundamental ideas of Objectory and a simplified version of it. In this book we call this simplified method OOSE to distinguish it from Objectory. To use the process in production you will need the complete and detailed process description which, excluding large examples, amounts to more than 1200 pages. Introducing the process into an organization needs careful planning and dedication. It also requires that the process be adapted to the unique needs of the organization. Such process adaptations must of course be carefully specified, which can be done in a development case description, as will later be explained. It is our hope that we have reached our goal with this book, namely to present a coherent picture of how to use object-orientation system development in a way which will make it accessible both to practitioners in the field and to students with no previous knowledge of system development. This has been done within a framework where system development is treated as an industrial activity and consequently must obey the same requirements as industry in general. The intention is to encourage more widespread use of object-oriented techniques and to inspire more work on improving the ideas expounded here. We are convinced that using these techniques will lead to better systems and a more industrial approach to system development. Part I: Introduction . The book is divided into three parts. The first part covers the background, and contains the following chapters: System development as an industrial process The system life cycle What is object-orientation? Object-oriented system development Object-oriented programming This part gives an introduction to system development and summarizes the requirements of an industrial process. It also discusses the system life cycle. The idea of object orientation is introduced, and how it can be used in system development and during programming is surve