CREATE TABLE powiazanie ( id_powiazania int (50) PRIMARY KEY NOT NULL AUTO_INCREMENT, id_firmy int (50) FOREIGN KEY REFERENCES firmy(id_firmy) ON DELETE CASCADE, id_kategori int (50) FOREIGN KEY REFERENCES kategorie(id_kategori) ON DELETE CASCADE )
CREATE TABLE powiazanie ( id_powiazania int (50) PRIMARY KEY NOT NULL AUTO_INCREMENT, id_firmy int (50) FOREIGN KEY REFERENCES firmy(id_firmy) ON DELETE CASCADE, id_kategori int (50) FOREIGN KEY REFERENCES kategorie(id_kategori) ON DELETE CASCADE )