【摘要】 在嵌入式实时数据库系统中,实时事务执行效率的高低直接影响着整个数据库系统性能的好坏。因此有必要对嵌入式实时事务进行有效预分析和预处理,以支持实时事务实现定时限制。文章给出了一种基于功能替代并且考虑实时事务定时性、功能替代性、多种相关性的实时事务提交策略,大大提高了实时事务执行的成功率。更多还原

【Abstract】 In the embed ded real-time database system,the execution efficiency of real-time transactions has a directed effect on the database system’s performance.So it is necessary to make efficient preanalysis and preprocess on the em-bedded real-time transactions for supporting the implementation of real-time transaction’s timing constraint.In this pa-per,one strategy based on function alteration which thinks over the real-time transactions timing,function alternative speciality,multi-correlation is presented,which increases the success ratio of real-time transactions.更多还原