create table towar(id int AUTO_INCREMENT PrimarY KEY, nazwa varchar(20),rodzaj_id int,cena int, constraint abc foreign key (rodzaj_id) references rodzaj(id));
create table rodzaj(id int AUTO_INCREMENT PrimarY KEY, nazwa varchar(20));
create table klient(id int AUTO_INCREMENT PrimarY KEY,imie varchar(10), nazwisko varchar(15),pesel varchar(11) UNIQUE);
CREATE TABLE zamowienie(id int AUTO_INCREMENT PrimarY KEY,id_k int,id_t int,ilosc int,constraint bcd foreign key (id_k) references klient(id));
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