[development] DB trivia - fun for everyone!

[add1sun]

The db schema documentation patch (http://drupal.org/node/164983) is  
quite close to being completed but we still have a small list of  
unknowns.  If folks that are familiar with these could give us some  
descriptions, I'm more than willing to roll them into the patch.

FIELDS:
aggregator_category.block
aggregator_feed.image
aggregator_feed.etag
aggregator_feed.block
aggregator_item.guid
search_index.fromsid
search_index.fromtype

IN SYSTEM.SCHEMA:
cache - table
flood - table
menu_links - table
files.status - field
system.owner - field

This would be awesome to have in Drupal 6 but we need to get it  
knocked out soon.  Thanks!

- Addi