Compared with the traditional model, the spatiotemporal extended object model is able to speed up the data modeling process and to make model easier to comprehend and maintain.

时空扩展对象模型与传统方法相比，能更方便地获取时空信息，加速建模过程，使建立的模型更容易理解和维护。

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Constraints provide a flexible, compact and uniform way to represent diverse data capturing spatiotemporal behavior, continuous change, incomplete information and complex modeling requirements.

约束提供一种灵活、统一、简洁的方式来表达时空对象的特性，描述对象连续的变化，表示不完整的信息和满足复杂建模的要求。

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