SQL Server Replication Types
Microsoft has narrowed the field to three major types of data replication approaches within SQL Server: snapshot, transactional, and merge. Each replication type applies only to a single publication. However, it is possible to have multiple types of replication per database.
Snapshot replication makes an image of all the tables in a publication at a single moment in time, and then moves that entire image to the subscribers. Little overhead on the server is incurred because snapshot replication does not track data modifications like the other forms of replication do. It is possible, however, for snapshot replication to require large amounts of network bandwidth, especially if the articles being ...