create table post ( id serial primary key, name varchar(100) not null, url text not null, attributed_to text not null, published timestamp not null default now(), updated timestamp ); create table post_like ( id serial primary key, post_id int references post on update cascade on delete cascade not null, fedi_user_id text not null, score smallint not null, -- -1, or 1 for dislike, like, no row for no opinion published timestamp not null default now() );