ER Diagram

Description

         For each procedure, turn in the following:

o   Turn spool on, then run the procedure with several values.  Turn spool off.

o   Turn in a copy of the code

o   Turn in a copy/results of the spool file (showing the output).

• Prerequisites:

o   Run the following script: hw5ScriptEnrollment.sql

• ER Diagram

o   The script will create the following tables and relationships

Complete the following

Tutorial 7

1. Create a procedure, ENROLL_STUDENT(pStudent, pClass), to enroll a student to the course.  Assume user enters valid data.

2. Some courses require a student to be a Sophomore, Junior, or Senior in order to enroll.  Enhance the above procedure to ensure that students have appropriate academic standing (student standing is equal to or greater than course standing), call it ENROLL_STUDENT2.

3. In each semester, a student can enroll in a maximum of 15 class hours.  Create a procedure, ENROLL_STUDENT3(pStudent, pClass), that will enroll a student as long as the enrollment does not violate the maximum of 15 class hours condition.

Note:  Create this procedure independent of the class standing requirement.

4. A student’s standing is determined by the total credit hours earned for all classes, as follows:

0 – 30: Freshmen

31 – 60: Sophomore

61 – 90: Junior

91 and above: Senior

Create a procedure, UPDATE_STANDING(pStudent), that will update a student’s standing.

5. A student must earn an A, B, or C in a class in order get credit for the course hours.  Grades of D, F, or W do not count.  Enhance the above procedure to only count courses where the student earned an A, B, or C, call it UPDATE_STANDING2

6. Each course has a capacity limit.  Create a procedure, ENROLL_STUDENT4(pStudent, pClass), that will only add the student if the course is kept within the capacity limitation.

Note:  This requirement is independent of previous ENROLL_STUDENT procedures you created.

7. Create a procedure, UPDATE_GPA(pStudent), that will update a student’s GPA.  The GPA is calculated as follows:
   A – 4 points

B – 3 points

C – 2 points

D – 1 point

Others – 0 points.

Use the above points and a weighted average based on the course credit hours.  For example, a student earned the following grades:

A – 3 credit hour class

B – 3 credit hour class

C – 1 credit hour class.

The GPA is (4 * 3 + 3 * 3 + 2 * 1) / (3 + 3 + 1) = 3.29

8. Create a procedure, VALIDATE_CLASSID(pClass), that will check if the class exists in the CLASS_SCHED table.  If the student is found, display “Student Found!  Valid ID.”, else display “Student NOT Found!  Invalid ID.”

9. Create a procedure, VALIDATE_STUDENT(pStudent), that will check if a student exists in the STUDENT table.  If the class is found, display “Class ID Found!  Valid ID.”, else display “Class ID NOT Found!  Invalid ID.”

10. Create a procedure, DROP_STUDENT4(pStudent, pClass), that will drop the student from a course.  If the student is enrolled in the class, update the grade to a “W”, otherwise, display an error message.

11. Create a procedure, CONFLICT(pStart1, pEnd1, pStart2, pEnd2), that checks for class schedule conflicts.  All input parameters are numeric.  pStart1 and pEnd1 are the start and end times for class 1.  pStart2 and pEnd2 are the start and end times for class 2.  If there is a conflicts, display that a conflict exists, otherwise, display that no conflict exists.