数据复制使数据的副本从一个位置移到另一个位置。
Data replication moves copies of data from one location to another location.
乍一看，该策略似乎是一个好方法——但代码副本有错误，所以整合这些复制路径应该是一种改进。
At first glance, this strategy seems like a good idea — code duplication is a bad thing, so consolidating these duplicated paths should be an improvement.
这个复制数据库是运行数据库一个完整副本。
The replica database is an exact copy of the operational database.
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