With database replication per data domain (using database provided replication mechanisms), operators can create globally distributed portal sites that are individually managed and operated.
通过按数据域复制数据库(使用数据库提供的复制机制)，操作人员可以创建能够进行单独管理和操作的全局分布的门户站点。
This paper focuses on the fast update for globally frequent item sets in distributed environment when the records in database increase.
本论文主要考虑在分布式环境下数据库记录增加后，全局频繁项目集的快速更新。
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