嵌入式数据库中实时事务管理器的设计与实现

摘要

Based on the analysis of real-time data processing requirements and transaction management mechanism, the real-time transaction manager is added for the embedded database system to enable real-time transaction management. The essential algorithm for the real-time transaction manager involves transaction deadline analysis, transaction priority-based dynamic assignment, transaction scheduling, and transaction admission. By implementing the real-time transaction manager in the Tyche_DB, it is verified that the Tyche_DB can process data in real time.%为解决传统嵌入式数据库系统只支持基本的事务操作,使得系统无法满足实时性应用需求的问题,分析了实时系统的特点和要求,并综合嵌入式数据库系统事务管理机制,提出了实时事务管理器作为嵌入式数据库系统的实时性解决方案,该管理器的核心算法包括事务截止期分析、事务优先级动态分配策略、事务调度策略和事务接纳策略几个部分.通过应用于嵌入式数据库管理系统Tyche_DB可知,该系统具备了实时系统的特点,满足实时性应用的需求.