I am a DBA, a programmer, and a sysadmin. My title is Engineer and I work for one of the largest Domain and Hosting companies in the world. We are also one of the largest MySQL shops on the planet, as well as being responsible for PostgreSQL, MongoDB, Cassandra, Hadoop, Redis, Memcache, and even some MS SQL.
My team here is amassing and we do amazing things every day. And this is a spot for me to talk about it.
We control millions of databases. We control the hardware. We control the software. Do not attempt to adjust your scheme. We are watching.