I tell people that I (well, we, the DBAs) look after the databases, the database servers, make reports and make manual changes from the tickets that end-users send us. We make sure that the DBs are running as well as we are allowed manage them  and the servers have optimal settings in security and performance.
We turn data into information, that is, we collect all manner of data in our specific field and when we get a request for, say, the number of x that happened per geographical unit in period y, excluding conditions a, b and c, we can get this done for them.
Finally, I am developing cubes and cube-based reports internally and, if all goes well, we will be able to offer these to our clients.
 There are constraints — I would love give some of the instances more CPUs and more RAM, but the relevant product manager can't afford it (internal accounting). I would love to revamp the indexes, but this requires a release and all that goes with a release (testing and so forth).