Data Synchronization Topologies
DRS real-time synchronization supports multiple topology types. You can plan the topology types as required. For details, see the following content.
![](https://support.huaweicloud.com/eu/realtimesyn-drs/public_sys-resources/note_3.0-en-us.png)
To ensure data consistency, do not modify the synchronization objects in the destination database.
One-to-One Real-Time Synchronization
You can create a one-to-one synchronization task.
One-to-Many Real-Time Synchronization
You need to create multiple synchronization tasks to implement one-to-many real-time synchronization. For example, to synchronize data from instance A to instances B, C, and D, you need to create three synchronization tasks.
Many-to-One Real-Time Synchronization
You need to create multiple synchronization tasks to implement many-to-one real-time synchronization. For example, to synchronize data from instances B, C, and D to instance A, you need to create three synchronization tasks. Multiple tables can be synchronized to one table.
For details about the restrictions and operation suggestions on the many-to-one scenario, see FAQs.
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