But a layered image SHOULD be a single file and not a filesystem. No non-technical user would expect otherwise.
And why all the spite? Gus isn't proposing that Acorn's database schema BE the standard. He says that clearly. He simply wrote a blog post giving an example of how he has used SQLite for storing layered images. (Also, he did happen to describe how he does layer sequencing - did you read the full article?) Any final spec would of course need to define additional semantics. That wasn't the point.
> But a layered image SHOULD be a single file and not a filesystem.
But if all (or most of what) you want is a VFS, SQLite isn't necessarily a good way to make one. As has been mentioned elsewhere in the thread, it's fairly common for modern file formats to be zips of a structured filesystem; although this has upsides and downsides compared to SQLite, it seems much easier to run unzip than look up how to get SQLite to output the binary content of a table row to a file.
And why all the spite? Gus isn't proposing that Acorn's database schema BE the standard. He says that clearly. He simply wrote a blog post giving an example of how he has used SQLite for storing layered images. (Also, he did happen to describe how he does layer sequencing - did you read the full article?) Any final spec would of course need to define additional semantics. That wasn't the point.