Comment by bradleyy

It's really convenient for being able to quickly whip up diagrams to share for discussion. Like when you have a small group of folks that need to iterate on a DB design, it's super simple to change things.

I've used this a bunch early in projects where the team needs to agree on DB structure:

1. whip something up as a discussion piece 2. usually a quick meeting to iterate on it, spot problems, correct. 3. you're close enough to build the DB bits, ship it. :)