【摘要】 在分析公安信息系统环境和特征的基础上，提出了一种适合公安信息系统的海量人口信息存储与复制策略。该策略采用多数据库结构，实现了数据访问的负载分担，大大提高ＰＳＭＩＳ的访问性能、可用性和可靠性。同时，该策略支持可接受的数据弱一致性，能够使多数据库系统在有限的时间内收敛，达到各个数据节点数据完全一致，因而该策略能够很好地应用于公安信息系统的海量人口信息管理系统。更多还原

【Abstract】 Base on the analyse of the Public Security Management Information System (PSMIS), this article brings forward a data storage and replication tactic on multi-point databases. This tactic can make the system having much higher performance, availability and reliability by using multi-point database. On the same time, MSRT can support acceptable data consistency among so many databases and, finally, make all the Multi-Point databases have the same set of data. So, MSRT is fit for PSMIS well.更多还原