SQL Server: Replication Models

To make the replication go smoothly, you should do a bit of planning, which involves selecting a specific replication model and performing any necessary preliminary tasks before you start configuring replication.

Following are the models of Replication:

1. Peer-to-Peer Model.
2. Central Publisher Model.
3. Central Publisher with Remote Distributor Model.
4. Central Subscriber Model.
5. Publishing Subscriber Model.

To understand these models in detail please read:
http://technet.microsoft.com/en-us/magazine/dd323622.aspx