Remember this, though: just because a record in the database says there is a version 1.2 doesn't mean it actually exists.

The database can store a field it calls a "version number", but that doesn't enforce anything on reality.

I would like to simultaneously store different versions of the same module (I'm looking at you, CGI.pm!), but that's not a issue that a database record will fix. We still have to have some way to store it. Once we have that, we'll be able to figure out which version to get even without a database.

So, I don't see how the database is doing anything special here, or adding value. I certainly don't think it is doing any "versioning", in any context.