I think he calls it "database" because it is strongly integrated with the database syntax of the Opa language. You can declare and use this "dropbox-database" just like a Mongo one, independently of the notion of safe-ness of the database.
Consistent with the complaint leveled against my previous comment, I should think that this is really consistent with the DBMS syntax of the Opa language</pedantry>
gdp|13 years ago