Airtable is pretty close. It's not clear to me, though, whether it supports complex relational queries -- even after digging through the docs. Edited: yikes,

Airtable is pretty close. It's not clear to me, though, whether it supports complex relational queries -- even after digging through the docs. Edited: yikes, it looks like conditionals use Excel-like formulas? That's part of what I'm trying to get away from.