Heterogeneous replication enhancements include : publishing data from an oracle database with transactional and snapshot replication ; improved support for non - sql server subscribers 异类复制增强功能包括：从带有事务复制和快照复制的oracle数据库发布数据，对非sql server订阅服务器的改进支持。
If your application requires that data be replicated only once for example when migrating data or that it be updated periodically rather than incrementally , use snapshot replication 如果应用程序要求只复制一次数据（例如迁移数据时）或要求定期更新数据，而不是增量更新数据，需要使用快照复制。
With snapshot or transactional replication , you can create another publication and include the table in both publications in the filter clause for the article in that publication , specify 对于快照复制或事务性复制，可以再创建一个发布，在这两个发布中都包括该表（在该发布中的项目的筛选器子句中指定
This scenario is best implemented with the heterogeneous replication features of snapshot replication and or transactional replication , which are well suited to handle the requirements outlined in the previous section 最好使用快照复制和/或事务性复制的异类复制功能来实现此方案，这能够很好地满足上一部分中列出的要求：
During this processing , if the structure of a master table has been changed , it will have to drop and recreate the snapshot or do a full refresh , which can be extremely time and resource consuming 在使用快照复制的过程中，如果主表结构发生变化，则需要删除并重新创建快照，或者进行完全刷新，这将带来时间和资源的巨大消耗。
An initial snapshot is typically applied for all types of replication , so you should be familiar with the considerations for snapshot replication even if you choose to implement transactional replication or merge replication 初始快照通常应用于所有类型的复制，因此，即使选择实现事务性复制或合并复制，也应该熟悉快照复制的注意事项。
For snapshot and transactional replication , when reinitialization occurs , any changes made at the subscriber , but not yet synchronized with the publisher , are overwritten by the application of the new snapshot 对于快照复制和事务性复制，当发生重新初始化时，订阅服务器上所做的但尚未与发布服务器同步的任何更改都将在应用新快照时被覆盖。
The procedures by which the snapshot agent implements the initial snapshot in transactional replication are the same procedures used in snapshot replication except as outlined above with regard to concurrent snapshot processing 快照代理在事务性复制中实现初始快照所使用的过程与快照复制所使用的过程相同（上述有关并发快照处理的情况除外） 。
Snapshot replication can be used by itself , but the snapshot process which creates a copy of all of the objects and data specified by a publication is also commonly used to provide the initial set of data and database objects for transactional and merge publications 快照复制可由其自身使用，但是快照处理（负责创建由发布所指定的所有对象和数据的副本）通常还用于为事务性发布与合并发布提供初始的数据和数据库对象集。
