Is it possible to do N-master => 1-slave replication with MySQL?

Question

I want to make a dedicated SLAVE machine for data replication of three database on three different servers. In other words, I want to do Multiple Master => SIngle Slave rep

Answer 1

I do not know a lot about MySQL, but don't you have the possibility to set an 'upload only' replication configuration, where the role of the master/publisher is only to collect updates made at the slave/subscriber level.