This document defines a package in Oracle PL/SQL called STUDENT_PKG that contains functions and procedures for calculating and updating student data. It includes a function to calculate a student's GPA based on their grades and credit hours, a function to calculate their total credit hours, and a procedure to update a student's record with their calculated GPA and credit hours.

1. create or replace PACKAGESTUDENT_PKG IS
FUNCTION CALCULATE_GPA
(STUDENT_ID1 IN NUMBER)
RETURN NUMBER;
FUNCTION CALCULATE_HOURS
(STUDENT_ID1 IN NUMBER)
RETURN NUMBER;
PROCEDURE UPDATE_STUDENTS;
End;
create or replace PACKAGEBODY STUDENT_PKG IS
FUNCTION CALCULATE_GPA
(STUDENT_ID1 IN NUMBER)
RETURN NUMBER
IS
GPA Number(3,2);
STUDENT_ID2 NUMBER(6);
BEGIN
SelectTo_Char(NVL(Sum(Points)/Sum(Credit_Hours),0),'0.99') GPA INTOGPA
from
(SelectEnrollment.Student_ID,Enrollment.Grade,Grade_Value*Credit_HoursPoints,Credit_hours,
Enrollment.Course_Number
fromEnrollment
leftjoinGrade onGrade.Grade=Enrollment.Grade
leftjoinSectionon(Enrollment.Term_Code=Section.Term_Code and
Enrollment.Subject_Code=Section.Subject_code and
Enrollment.Course_Number=Section.Course_Numberand
Enrollment.Section=Section.Section)
leftjoinCourse on (Section.Subject_Code=Course.Subject_Codeand
Section.Course_Number=Course.Course_Number)) First
Where Student_Id=Student_ID1
group byStudent_ID;
RETURN GPA;
END CALCULATE_GPA;
FUNCTION CALCULATE_HOURS
(STUDENT_ID1 IN NUMBER)
RETURN NUMBER AS
Credit_Hours1Number(2);
BEGIN
SelectSUM(CASEWHEN GRADE IS NULL THEN 0 ELSE CREDIT_HOURS END) intoCredit_Hours1
from Course
joinEnrollmentoncourse.course_number=Enrollment.course_number

2. where Student_id=Student_Id1
GROUP BY STUDENT_ID;
RETURN Credit_Hours1;
END CALCULATE_HOURS;
PROCEDURE UPDATE_STUDENTS AS
GPA1 NUMBER (3,2);
CREDIT_HOURS1 NUMBER(2);
STUDENT_ID1 NUMBER(6):=333333;
BEGIN
GPA1:=CALCULATE_GPA(STUDENT_ID1);
CREDIT_HOURS1:=CALCULATE_HOURS(STUDENT_ID1);
UPDATE STUDENT
SET GPA=GPA1,
CREDIT_HOURS=CREDIT_HOURS1
WHERE STUDENT_ID=STUDENT_ID1;
END UPDATE_STUDENTS;
END STUDENT_PKG;