The purpose of the DEFAULT option for parameters is to provide an automatic value to be
used in cases where a value is not passed from the calling environment. The default value
may be provided using either DEFAULT <value> or := <value>.
Find the country_id of your own country by executing a suitable SELECT…FROM countries….
Then retrieve your find_area_pop procedure from question 2C. Modify the code to use your
country_id as a default value for the country_id IN parameter. Save your code. Then retrieve your
anonymous block from question 2D and modify it so that it does NOT pass the country_id to the
procedure. Test the block and check that your country’s details are returned and displayed. If your
modified anonymous block does not work, correct it so it will.