SQL Server Replication

Applies to: SQL Server Azure SQL Managed Instance

Replication is a set of technologies for copying and distributing data and database objects from one database to another and then synchronizing between databases to maintain consistency. Use replication to distribute data to different locations and to remote or mobile users over local and wide area networks, dial-up connections, wireless connections, and the Internet.

Transactional replication is typically used in server-to-server scenarios that require high throughput, including: improving scalability and availability; data warehousing and reporting; integrating data from multiple sites; integrating heterogeneous data; and offloading batch processing. Merge replication is primarily designed for mobile applications or distributed server applications that have possible data conflicts. Common scenarios include: exchanging data with mobile users; consumer point of sale (POS) applications; and integration of data from multiple sites. Snapshot replication is used to provide the initial data set for transactional and merge replication; it can also be used when complete refreshes of data are appropriate. With these three types of replication, SQL Server provides a powerful and flexible system for synchronizing data across your enterprise. Replication to SQLCE 3.5 and SQLCE 4.0 is supported on both Windows Server 2012 and Windows 8.

What's new

  • SQL Server 2017 has not introduced significant new features to SQL Server replication.
  • SQL Server 2016 has not introduced significant new features to SQL Server replication.

For backward compatibility information see, Replication Backward Compatibility

Replication security

Publishing and Distribution

Publications and Articles

Snapshot Options

Filter Data

Transactional Replication Options

Merge Replication Options

Manage Subscriptions

Synchronize Subscriptions