A insert into professor values (‘Luiz’, 34, 1500);
B insert into professor values (‘Afonso’, 15, null);
C insert into professor (nome, registro) values (‘Juca’, 50);
D insert into professor (salario, registro, nome) values (2000, 49, ‘Ivo’);
E insert into professor (nome, registro, salario) values (‘Jonas’, 27, 950).