在軟體工程蓬勃發展的這個世代，採用統一塑模語言(UML)來完成物件導向設計與分析(OOA/D)顯然已是目前資訊系統開發的標準。然而，在統一塑模語言中提供許多的模型圖以不同的觀點與抽象層次來表示一個系統，模型之間會有一定的相依關係與重疊性，過去有多位學者曾提出在統一塑模語言中模型圖的轉換理論[1][2][5][10]，但他們並沒有明確的定義細部轉換方法，以及映射(mapping)所使用的原則。本論文提出一個從循序圖到類別圖的轉換架構及方法，藉由母模型(metamodel)的分析與映射來強化過去學者所提出的理論，然後實作一個以延伸標記語言(XML)儲存統一塑模語言表示的系統來驗證我們所提出的轉換理論。運用此系統，程式設計師可自動地將循序圖轉為類別圖，再補足靜態結構塑模來完成完整的類別圖，然後可利用工具自動產生程式樣版，從而增加系統開發的效率，並且提高資訊的交換性以及重用性。

Using Unified Modeling Language (UML) to represent Object Oriented Analysis/Design(OOA/D) has become a standard for information system development obviously in this era of software engineering. UML defines many different models to present information system with different views and abstract levels. In these models, there are certainly some interdependent relations and overlapping parts. Although many scholars had proposed transformation theory between the models, they did not define and transformation mapping methods and detail steps. In this study we propose a procedure which transforms sequence diagram into class diagram by using metamodel. We propose a model transformation system that uses XML specification to describe UML models and verify the transformation procedure proposed can work currently. By means of the proposed system, programmer can transform sequence diagram into class diagram automatically. This results in that the software system can be developed effectively, due to programmer can manually enforcing the static structure to achieve the final class diagram. Another advantage is using XML to represent data can enhance the exchangeability and reusability.

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