Q68711 – Banco de Dados – Fundação Getulio Vargas 2015

create table T1 (A1 int not null primary key, B1 int) create table T2 (A2 int not null primary key, B2 int, A1 int not null, constraint XXX foreign key (A1) references T1(A1))

create table T1 (A1 int not null primary key, B1 int) create table T2 (A2 int not null primary key, B2 int, A1 int null unique, constraint XXX foreign key (A1) references T1(A1))

create table T1 (A1 int not null primary key, B1 int, constraint XXX foreign key (A1) references T1(A1)) create table T2 (A2 int not null primary key, B2 int, A1 int not null unique)

create table T1 (A1 int not null primary key, B1 int) create table T2 (A2 int not null primary key, B2 int, A1 int not null unique, constraint XXX foreign key (A1) references T1(A1))

create table T1 (A1 int primary key, B1 int) create table T2 (A2 int primary key, B2 int, A1 int unique, constraint XXX foreign key (A1) references T1(A1))