class User < ActiveRecord::Base                   ; end
class DefaultOption < ActiveRecord::Base          ; end
class UserLogin < ActiveRecord::Base              ; end
class UserType < ActiveRecord::Base               ; end
class Comment < ActiveRecord::Base                ; end
class Search < ActiveRecord::Base                 ; end
class SpecialUserRecord < ActiveRecord::Base      ; end
class TableWithoutForeignKey < ActiveRecord::Base ; end
