4-9. Collecting Related Routines into a Single Unit
You have a number of procedures and functions that formulate an entire application when used together. Rather than defining each subprogram individually, you prefer to combine all of them into a single, logically related entity.
Create a PL/SQL package that in turn declares and defines each of the procedures together as an organized entity. You declare each of the subprograms in the package specification (otherwise known as a header) and define them in the package body.
The following example shows the creation of a PL/SQL package containing two procedures and a variable.
First, you create the package specification:
CREATE OR REPLACE PACKAGE process_employee_time IS total_employee_salary NUMBER; ...