一种实时数据库事务处理策略的应用

通过对实时事务特点的分析和对实时数据库中事务处理策略的研究,提出了一种把优先级分配策略与定时调度策略相结合的实时事务调度策略,并融合快照机制与优先级分配策略建立了一种新的基于乐观法的并发控制策略。将这种策略应用于一个实时系统的实时数据库,系统的性能和稳定性明显提高。实验结果表明所给出的新策略及方法的正确性和有效性。

Application of a Transaction Processing Strategy in Real-Time Database

Through studying on real-time transaction and transaction processing in real-time database,a new thought of transaction scheduling policies is given which combines the advantage of PRI distributing scheduling policy with timing scheduling policy.And then a new concurrency control mechanism is proposed.Based on the idea of snapshot and PRI distributing scheduling policy,this mechanism can check out the deadline of transaction.At last,the application in a real-time system shows that the given mechanism and method are feasible and effective.