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针对疫情应急系统在时空数据逻辑性方面的高要求及已有时空数据模型在该方面的不足,本文以事件产生为触发、事件发展为驱动,进行面向对象的时空数据建模研究:建立了城市疫情应急相关时空数据的概念模型、静态结构模型和时态行为模型;并设计Geodatabase实例和组件模型,实现对时空数据模型的面向对象的组织、管理和操作。通过在眉山市疫情监测应急系统中的成功应用表明,基于事件对多关联复杂空间对象群进行的联动操作,实现了时空数据的逻辑耦合。
In response to the high demand of the epidemic emergency system in the logic of spatiotemporal data and the shortcomings of the existing spatiotemporal data model in this aspect, this article takes the event generation as a trigger and the event development as the driving force to carry out object-oriented spatio-temporal data modeling research: The conceptual model, the static structure model and the temporal behavior model of the epidemic emergency related spatiotemporal data; and design the Geodatabase instance and component model to realize the object-oriented organization, management and operation of the spatiotemporal data model. The successful application in the epidemic monitoring emergency system in Meishan City shows that the logical coupling of spatio-temporal data is realized based on the linkage operation of the event to the multi-associated complex spatial object group.