【摘要】 事件发生使得系统状态进行转移 ,事件历史中事件变更对时态数据库具有很重要影响。文章通过对时态数据库和事件的形式化定义和规范化处理 ,系统分析了事件变更对时态数据库的影响 ,实现了在事件变更时对时态数据库的调整算法更多还原

【Abstract】 The occurrence of the event makes the system transit from one state to another. The event modification in the event history has the important influence on the temporal database. By the formalization and normalization of the temporal and the event, the influence of the event modification on the temporal database is sysmaticlly analysed, and the ajusting arithmetic of the temporal database is implemented correspondingly.更多还原