What are the database tables related to comments in Drupal 7? I received a lot of spam comments in one of my websites running on Drupal 7. I googled for a solution to delete them in bulk and came up on 

DELETE FROM comment WERE status = 0


The query worked but the database size did not shrink significantly and I realized out that in addition to the 'comment' table there was another table called 

 field_data_comment_body


which housed the body of the comment. 

I would like to know which all tables are related to comments in Drupal 7
I know following tables.
1. comment
2. field_data_comment_body
3. field_revision_comment_body
4. node_comment_statistics

Beside that, I think, comments are also stored in any other tables installed by modules, and linked to comment modules.