on a more serious note, everyone should have a little utility belt of lists, hand curated and intimately known. they are an extension of me at this point.
I see the other comment is marked dead now, but seriously why? I'm having a hard time imagining how a schema is viewed as actual intellectual property or a security risk.
Intellectual property: it represents what kinds of data you maintain, their naming, and their relation. That’s valuable on its own and also points to what your software does.
Security: well, see above—knowing what data is stored determines your value as a target.
Now is it the _best_ way to target an adversary? Probably not.
I've used DBML and like it as well. There's a small ecosystem of tools that support it, and I think the additional structure with curly brackets makes for fast "eye parsing".
dbdiagram is definitely an useful utility. Some of the differentiators would be:
1. Simpler Syntax
2. Fully Local processing (This tool works offline, once you load the original web page)
3. Light weight & fast (the entire project is 20kb in size)
It does look VERY similar, but I think they tried to make the language a bit more terse. As a said is another comment, I think the slightly additional structure is actually better.