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No, you would need to set the database hostname as the server that it's on at Azzure Creative Ltd.
You can find this by going to the MySQL Databases icon within a package. The hostname you’ll need to use will be something similar to ‘shareddb1b.azzcreative.com’ although it's likely the database name on your package will be different.
'localhost' generally means the MySQL databases are hosted on the same server as the websites, which is quite common in the web hosting industry with hosts that have a 'single-server' approach where all services run from the same machine.
It's different at Azzure Creative Ltd as we split all services and have a strict 'one server, one rule' policy.
At the Azzure Creative Ltd data centres, web traffic, MySQL traffic and storage are all physically different machines, so 'localhost' doesn't work.