But... if you don't have someone dedicated to thinking about database issues, you need to treat database changes just like your code. It needs to be in a repository, it needs to be reviewed, and you need a change management regime.
From a anecdotal POV, I've noticed that many folks have a good process (or at least a consensus approach) to managing their code... but the database is often a red-headed stepchild that doesn't get the attention it deserves.