What database do you use most often? Is it because you want to or some other reason? Is there a particular reason it stands out for you if it's because you want to?

• SQL Server -- At my last job where I was the DBA this was the database they used. I hesitate to use the term "DBA" because there was very little work necessary to maintain the system.
• Sybase -- At my current job, where I am not the DBA, but a Powerbuilder developer.

Again, in both cases, the DB's were there before me so that's what I used. :)

What database have you had the best/worst experience with? How and why?

I'm not the DBA at my current job so I can't say how good/bad Sybase is to maintain, but SQL Server was definitely easy to manage at my last job (perhaps because it was a small company, with 3 programmers and the database was for internal use only, I dunno :).

This one's a bit tougher: Where do you draw the line between work the database should do and you should do? i.e. do you use a lot of stored procedures/database code or do you simply extract data and hack at it in perl? Why do you draw the line where you do?

This might be specific to working in Powerbuilder, but we like to do all of our SQL coding in stored procs, so that we don't have to recompile the app everytime we want to change a mistake we made in one of our queries!