扩展UML建模环境中对象关系的模型转换

Object-Relational Mapping in Extended UML Modeling Environments

大量的应用程序采用面向对象的结构,并需要在一个持久化的存储机构———关系数据库中存放和取回数据。面向对象和关系数据库这两种技术存在着阻抗不匹配,使用UML对两种模型进行转换可以减少这种不匹配。但UML对两者的模型转换存在着不足,文中提出了在UML建模环境中引入扩展对象图描述对象和关系的模型转换,简化了模型转换的步骤,使得模型转换的自动化程度更高。

Many applications use the object-oriented structures and need persist organization—relational databases to restore and retrieve data. There is an impedance mismatch between object and relational technology.Using UML can overcome this impedance mismatch. But UML is weak for transformation between them.A new technique that introduces extended object diagram to depict this transformation is proposed in this paper.It simplifies the steps of transformation,improves its automation.