摘要： 介绍了主动数据库系统的模型、ＥＣＡ规则和事件模型及实现途径，并讨论了在关系模式下主动数据库系统的基本监测框架和事件机制的优化策略．

关键词: 主动数据库, 事件, 条件, 模型, 监测

Abstract: This paper introduces a model of active database.in which ECA rule and a model for events and realization ways,then discusses a detection framework based on relative database.lt also investigates the corresponding optimization strategies.

中图分类号: 

• TP311