I have a doubt that would be, how to conduct a relationship that can be infinite: Ex:
User table with the user id field that would be one for many with Post Table.
Inside the Post Table would have post_id that would have more post inside it.
Post table with fields (User_id, Post_id, Text). Post2 table with fields (User_id, Post2_id, Post2_postID, Text).
In the scenario above if there were 10 more post would use 10 more post tables.
There is some way to have such relationships.
With comparative would be a tree of directories that within each one can have as many directories as you want and files.