Re:SQLite as an Application File Format (2014)
by sjwright on Tuesday December 25, 2018 @03:29AM
(#18756577)
Not sure what an open standard gets you above what SQLite already is. You can’t get much more open than that.
It's documented pretty well: https://www.sqlite.org/fileformat.html
I suppose that doesn't make it an open standard, but it hasn't changed much.