Replication Server distributes and synchronizes operational data in a heterogeneous replication environment. Replication Server keeps data up to date in multiple databases, so that you can access local data instead of remote, centralized databases.
Replication Server works to distribute data over a network by:
Providing application developers and system administrators with a flexible publish-and-subscribe model for marking data and stored procedures to be replicated.
Managing replicated transactions while retaining transaction integrity across the network.
See the Replication Server Administration Guide.