变化的业务需求不断地要求向关系数据模型或面向对象模型中添加新实体和关系。

From time to time, the demands of changing business needs require that you add new entities and relationships to the relational data models or object-oriented models.

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首先对目前国内外取得的研究成果作了简要综述，随后提出了一种新的电力系统面向对象模型。

Firstly, the paper reviewed the study achievements on power system object-oriented modeling concisely. A new power system object-oriented model was founded subsequently.

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提出了一种新的面向对象的存储一致性模型—OC。

This paper present a new object-oriented memory model called OC and define its semantic rule.

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