Salve,

I've recently played around with Postgresql and I was surprised to see that it offers class hierarchies for Subjects of the SELECT statements. I don't know about SQLite. I doubt that this offers the same. I really don't know whether this answer is helpful. Some sort of Postgresql emulator might exist? Or maybe a Postgresql cloud solution. I feel that this post is not likely to be helpful, but I write it on the off chance that it is.