基于单用户数据库的多用户系统的研究与实现

Study and Application of the Multi-User System Based on the Single-User Database

对特殊的多用户环境下单用户数据库进行了深入研究，提出了采用事务串行调度的方法取代并发控制，使单用户数据库系统满足多用户需求的新方案，该方案具有成本低、实现方法简单的特点，同时应用具有优先级的动态事务请求队列改善性能，并在铁路站名略号信息管理系统中成功应用该技术方案。

This article studies a single-user Database System in the multi-user environment,and introduces a new idea using the single-user Database System that could satisfy special multi-user requirement to reduce the cost. Parallel control is replaced by serial transaction scheduling in this idea.In addition,dynamic transaction queue with priorities is used to improve the performance.And this idea has been successfully employed in the Railway Station Information Management System.