Re: interconnection between multiple databases. synchronization of multiple mysql databases
Posted by: Rick James
Date: November 15, 2010 10:55AM

I don't know enough about NDB Cluster to answer for that. There are enough differences so that what I say here _may_ not apply.

Yes (non-Cluster), the Slave can have a different schema. One trick people like to do is change the Engine (MyISAM/InnoDB) to get some perceived performance improvement. Another is to have a different set of indexes.

Yes, the Slave can have extra tables/databases. Replication is oblivious to such. You can also restrict what tables/databases are replicated, if you want extra ones on the Master.

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