Database Modeling and Design

7.2 Logical Design 143
create table customer
(cust_no char(6),
job_title varchar(256),
primary key (cust_no),
foreign key (job_title) references job
on delete set null on update cascade);
create table job
(job_no
char(6),
job_title varchar(256),
primary key (job_no));
create table order
(order_no char(9),
cust_no
char(6) not null,
primary key (order_no),
foreign key (cust_no) references customer
on delete set null on update cascade);
create table salesperson
(sales_id char(10)
sales_name varchar(256),
dept_no char(2),
primary key (sales_id),
foreign key (dept_no) references department
on delete set null on update cascade);
create table department
(dept_no char(2),
dept_name varchar(256),
manager_name varchar(256),
primary key (dept_no));
create table item
(item_no char(6),
dept_no
char(2),
primary key (item_no),
foreign key (dept_no) references department
on delete set null on update cascade);