At least, if it can be modelled by some type of finite database stored on disk or in memory, then you can store the entire contents of that database as one bina

At least, if it can be modelled by some type of finite database stored on disk or in memory, then you can store the entire contents of that database as one binary blob. Now you just need one tuple ("our_system", "the_db", the_binary_blob) QED :)