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Enterprise service computing from concept_6

Số lượng các thực thể bên ngoài và, do đó, các sự kiện kinh doanh mà họ tạo ra là một số đơn đặt hàng cao hơn độ lớn so với ví dụ giới thiệu trước đó. Sơ đồ kinh doanh, bối cảnh chụp này phức tạp một cách ngắn gọn và cung cấp một cách có cấu trúc để tiến hành việc tạo ra các trường hợp sử dụng một mô hình kinh doanh | 132 van Sinderen Almeida Pires Quartel Chapter VI Designing Enterprise Applications Using Model-Driven Service-Oriented Architectures Marten van Sinderen University of Twente The Netherlands João Paulo Andrade Almeida Telematica Instituut The Netherlands Luís Ferreira Pires University of Twente The Netherlands Dick Quartel University of Twente The Netherlands Abstract This chapter aims at characterizing the concepts that underlie a model-driven service-oriented approach to the design of enterprise applications. Enterprise applications are subject to continuous change and adaptation since they are meant to support the dynamic arrangement of the business processes of an enterprise. Service-oriented computing SOC promises to deliver the methods and technologies to facilitate the development and maintenance of enterprise applications. The model-driven architecture MDA fostered by the Object Management Group OMG is increasingly gaining support as an approach to manage system and software complexity in distributed-application design. Service-oriented computing and the MDA have some common goals namely they both strive to facilitate the Copyright 2007 Idea Group Inc. Copying or distributing in print or electronic forms without written permis- sion of Idea Group Inc. is prohibited. Designing Enterprise Applications 133 development and maintenance of distributed enterprise applications although they achieve these goals in different ways. This chapter discusses a combination of these approaches and discusses the benefits of this combination. Introduction Enterprise applications are subject to continuous change and adaptation since they are meant to support the dynamic arrangement of the business processes of an enterprise. For example an enterprise may decide to outsource a business process for efficiency reasons or different processes may be integrated to provide a new product. Therefore it is necessary to devise methods and technologies that can cope with this dynamic .