solidDB Advanced Replication technology uses a master/replica model. The master database has the official copy of the data, and replica databases can subscribe to that data. Replica databases can also change the local copy of the data and propagate the transaction to the master database, but the master database has the authority to alter or reject the data of the transaction to maintain the consistency of the data in the master database.

solidDB allows bidirectional data flow. Master databases can send data to replica databases, and replica databases can send data to master databases.

Sending data from master databases to replica databases is done by using a model that is called publish and subscribe: the master database publishes data to which replica databases can subscribe.

Sending data from a replica database to a master database is called propagating the data.

solidDB Advanced Replication also provides a push-based synchronization option by using the Sync Pull Notify capability, see Sync Pull Notify.