Answered: Create a function named fnTuition that…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Create a function named fnTuition that calculates the tuition for a student. This function accepts one parameter, the student ID, and it calls the fnStudentUnits function that you created in task 2. The tuition value for the student calculated according to the following pseudocode:

if (student does not exist) or (student units = 0)

tuition = 0

else if (student units >= 9)

tuition = (full time cost) + (student units) * (per unit cost)

else

tuition = (part time cost) + (student units) * (per unit cost)

Retrieve values of FullTimeCost, PartTimeCost, and PerUnitCost from table Tuition.

If there is no student with the ID passed to the function, the function should return -1.

Code two tests: 1) a student who has < 9 student units, and 2) for a student who has >= 9 student units. For each test, display StudentID and the result returned by the function. Also, run supportive SELECT query or queries that prove the results to be correct.

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