In such background, we developed large scale database management system OSCAR.
大型数据库管理系统oscar正是在这样的背景下产生的。
The system is developed by object-oriented method, and modeled by UML. According to E-R model analysis, the background database is established.
系统采用面向对象的开发方法，用uml建模语言将系统需求模型化，并根据E - R模型分析结果建立后台数据库。
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