begin;

alter table gocoder.info add column ver_fingerprint integer not null default 0;

create table gocoder.fingerprints(
	id integer not null primary key references gocoder.info(id) on delete cascade,
	start_data text not null,
	end_data text not null
);

create table gocoder.chapterprints(
	id serial primary key,
	data text not null
);

alter table gocoder.chapters add column fingerprint_id integer references gocoder.chapterprints(id) on delete set null;
alter table gocoder.chapters add column match_accuracy integer;

commit;