Create the following tables. The underlined bold column names are the primary keys. Make sure to specify the primary and foreign key constraints in your create table statements.

customer: (cus_code:integer, cus_lname:varchar(20), cus_fname:varchar(20), cus_initial:char, cus_areacode:integer,cus_phone:integer).

invoice: (inv_number:integer, cus_code:integer, inv_date:date,

foreign key cus_code references customer(cus_code))

line: (inv_number:integer, prod_code:integer ,line_units:integer,

foreign key (inv_number) references Invoice(inv_number),

foreign key (prod_code) references Product (prod_code) )

product:(prod_code:integer, prod_desc:varchar(50), prod_price:integer, prod_quant:integer,vend_code:integer,

foreign key (vend_code) referenecs Vendor(vend_code))

vendor:(vend_code:integer,vend_name:varchar(30),vend_contact:varchar(30),vend_areacode:integer,vend_phone:integer)