SQLテーブルの作成中に制約を作成する他の方法はありますか？

これは、スキーマの作成 を使用して実行できます。 ステートメント：

create schema authorization [schema name]
create table department 
(   code      varchar2(3) primary key,
    name      varchar2(40)  not null,
    chair     varchar2(11),
    constraint departmentChairFk foreign key(chair) references facultyStaff(staffId) on delete set null
)
create table facultyStaff 
(   staffID     varchar2(5) primary key,
    dob     date,
    firstName   varchar2(20),
    lastName    varchar2(20),
    rank        varchar2(10),
    deptCode    varchar2(3),
    constraint rankValue check (rank in ('Assistant', 'Associate', 'Full', 'Emeritus')),
    constraint facultyDeptFk foreign key (deptCode) references department (code)
)
create table student 
(   studentId   varchar2(5) primary key,
    dob     date ,
    firstName   varchar2(20),
    lastName    varchar2(20),
    status      varchar(10),
    major       varchar(3),
constraint statusValue check (status in ('Freshman', 'Sophomore', 'Junior', 'Senior',  'Graduate')),
    constraint studentMajorFk foreign key (major) references department (code)
);