传统的系统建造方法，信息工程、面向对象设计、快速应用开发，以及其它方法都具有其固有的优点和缺点。
Traditional System Building Approaches, Information Engineering, Object Oriented Design, Rapid Application Development, and a host of others all possess inherent strengths and weaknesses.
面向对象方法作为现代软件工程技术的重要部分，在现代信息系统的开发中发挥着积极的作用。
As an important part of modern software engineering techniques, object-oriented methods are playing an active role in the development of modern information systems.
对传统的实体信息获取方法作了改进，提出了面向对象的子实体信息获取方法，满足了工程应用的需要。
Traditional ways for information acquisition is improved, instead the sub-entity information acquisition oriented to object is proposed, and it can meet the requirement of the project.
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