This is a great tool. I voted it up but it didn't count because I'm on the same IP as the submitter.

This is not far off from being a first cut at the idea I submitted to YC last cycle.

So was your idea closer to dabble.db?

No, it started along the same lines as this, but would then also allow you to make changes to your schema, generate the appropriate ALTER TABLE commands, and then generate views for backward compatibility so that queries already written for the old schema will keep working. Also I just planned to do it as a desktop application since there's not really any aspect to this that benefits from being web-based.

I did some post-submission brainstorming with Paul, though, and the idea morphed into a DBMS desgined to run on S3.

Sweet! Are you working on that?

Looking for a partner. My original partner went back to school after rejection by YC, and then got offers of six figures from two different Wall Street hedge funds just for doing an internship next summer. So I don't think I'm going to be getting him back any time soon.

good app to start off with - though could use some more advanced options

E.g. it restricts primary keys to one column.