Replication is highly configurable but is based on replicating changes to database tables from one location to another.

复制是高度可配置的，但必须是将数据库表的更改从一个位置复制到另一个位置。

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HADR protects against data loss by replicating data changes from a source database, called the primary, to a target database, called the standby.

HADR把数据修改从源数据库(称为主数据库)复制到目标数据库(称为备用数据库)，从而防止数据丢失。

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The last point may be the most significant if you are replicating your database over a long distance for disaster recovery.

如果您远程复制数据进行灾难恢复，最后一点最重要。

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Companies like FluidOps make replicating all levels of a virtual landscape--the data, database, application, and operating system--a one-click operation.

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