FOSS gamedev and creative worlds

I'm curious and I looked into a sqlite file with a DB Browser. There is just one table with a pos column and a blob. In the pos column there are coordinates as a hash value, I guess. But I'm a little bit surprised that I can find something like this in the blob

default:snow
air default:stone default:dirt_with_snow default:dirt default:stone_with_coal

What is stored in these blobs? Is each blob one map block?

burli wrote:I'm curious and I looked into a sqlite file with a DB Browser.
There is just one table with a pos column and a blob. ..
What is stored in these blobs?

Searching the forum for chunk/mapchunk/sql/database/mapgen ...

How about "HELP: minetest .sqlite format" ?