tables

  Table "public.posts"
Column  |  Type   |                     Modifiers
---------+---------+----------------------------------------------------
id      | integer | not null default nextval('posts_id_seq'::regclass)
content | text    |
Indexes:
 "posts_pkey" PRIMARY KEY, btree (id)
Referenced by:
  TABLE "comments" CONSTRAINT "comments_post_id_fkey"
  FOREIGN KEY (post_id) REFERENCES posts(id) ON DELETE CASCADE

  Table "public.comments"
Column  |  Type   |                       Modifiers
---------+---------+-------------------------------------------------------
id      | integer | not null default nextval('comments_id_seq'::regclass)
content | text    |
post_id | integer |
Indexes:
  "comments_pkey" PRIMARY KEY, btree (id)
Foreign-key constraints:
  "comments_post_id_fkey" FOREIGN KEY (post_id)
  REFERENCES posts(id) ON DELETE CASCADE