create table feedback_gradings (
  `index` integer not null,
  id integer not null,
  unique_name text not null,
  value integer not null,
  type text not null default 'grading'
);

comment on column feedback_gradings.index is '
  Component index
';
comment on column feedback_gradings.id is '
  Component id
';
comment on column feedback_gradings.unique_name is '
  Unique name
';
comment on column feedback_gradings.value is '
  Grading selected value
';
comment on column feedback_gradings.type is '
  Component feedback type
';