This article introduces the work stream in designing of object relation database, and mainly discusses the ways of mapping from the class model to the relational model.
介绍对象关系数据库设计的工作流程，讨论如何将类模型映射到关系模型。
Introduces the main points of technology on object relation database and discusses its application basing on practical application.
本文介绍了对象关系型数据库的技术要点，并从实际出发来讨论它的应用。
It is an important research content of GIS fields in the recent years to store and manage mass GIS basic graphics data and attribute data using object-relation database.
使用对象关系型数据库来一体化存储和管理海量的GIS基础图形数据和属性数据是近年来GIS领域研究的一项重点内容。
Based on the design feature of sugarcane harvester, this paper aim to introduce the object-relation database managing system technology into the design system.
本文针对甘蔗收获机械的设计特点，将对象-关系数据库管理系统技术引入设计系统中。
Based on the design feature of sugarcane harvester, this paper aim to introduce the object-relation database managing system technology into the design system.
本文针对甘蔗收获机械的设计特点，将对象-关系数据库管理系统技术引入设计系统中。
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