Description by developer for all variables using data types

Question

How would the developer describe all variables using referential data types?

Answer 1

The developer describes all variables using referential data types as follows:

a. By using the employee.lname%type.

b. By using the employee.lname%rowtype.

c. Search for data type for EMPLOYEE column upon LASTNAME table as well as use such.

d. Declare this to be type LONG there.