3 branch factory share the same database

[chaiwei]

Hi,

 

Let said I have 3 branch factory locate on 3 different country, china, singapore and malaysia.

Each branch has its own local server, so when the time internet down, they still can access to the application.

 

But how can I share the database so that when the customer from china came to singapore factory, and the singapore crm check his passport or identification and it shows that we already have his record in china?

 

mysql replication? but if like this we got 3 master and 1 slave. is it possible?

Please advise.