SQL Crear tabla con referencias no clave principal
CREATE TABLE Users(
address varchar(100),
phone_number varchar(20),
userid serial,
constraint pk primary key (address, phone_number ),
constraint userid_unq unique (userid)
);
create table Stores(
storeid int primary key,
ownerID integer,
constraint b_fk foreign key (ownerID)
references Users(userid)
);
Quaint Quail