分布式在线事务处理及其优化

对分布式在线事务处理系统中的事务模型和事务处理及其优化工作作了较为详细地讨论和研究．在静态优化中，对串行、并行和混合方式的事务处理提出了一种完整、有效的估算代价的方法，即寻找一个从事务树节点集到分布环境中的主机集的映射，并是所有映射中使该事务树的代价为最小映射．动态优化则根据当前网络运行情况选择执行事务的最佳方案．本文的工作将对在分布式在线事务处理的理论研究与实际应用有着较为重要的意义．

Distributed On Line Transaction Processing and Its Optimization

This paper discusses and researches the transaction model, transaction process, and its optimization in a distributed on line transaction processing system. In static optimization, it provides a complete and effective way by which the transaction process cost is evaluated in serial, parallel and mixed models, to find the lowest cost mapping from the set of transaction tree's nodes to the set of host's in distributed environment. In dynamic optimization, the best schedule of executing transaction is selected according to the present situations of network. This work will advance the development of theoretical research and practical application in the distributed on line transaction process.