is my database a 2.6 database?

hello, I recently upgraded from 2.5.1 to 2.6 and all seemed to go well.

I had the page saying my database needed updating, I clicked the link and all seemed fine. However, I was looking in my database whilst making a querystring and noticed that my field names contradict the following taken from

get_posts from codex

Version 2.6 changed a number of the orderby options. Table fields that begin with post_ no longer have that part of the name. For example, post_title is now title and post_date is now date.

when I view the wp_posts table, I still have fieldnames like post_title rather than title. Does this mean my database is wrong or is it the code itself that drops the ‘post_’ prefix rather than the database?

Thanks for your time

J