Hi, Could any one show me how to write the following
function? Thank you very, very much!
The GPA Function
1. A GPA is calculated in the following fashion:
Assume a student receives
an A on a 3-credit_hour course and a D on a
2-credit-hour course. His grade
is (4*3+1*2)/(3+2)=2.8.
2.Repeat_delete Policy: A student may repeat a course
as many times as he
wants. However, if the first grade he receives on this
course is a D or F,
then the second grade will automatically replaces the
first grade, and the
first enrollment will not go into his GPA calculation.
Under any other
circumstances, his grades will be considered as a
regular grade and be
taken into consideration for GPA.
create table Enrollment(
Student# NUMBER (7),
SNUM NUMBER (5),
Call# NUMBER (7),
Semester char (8),
GRADE char (3),
Credit number,
Withdraw_Date Date);
SNUM + Call# represents one class.
Insert into Enrollment
values('58001','111','70070','Sp2000','F',3, null);
Insert into Enrollment
values('58001','111','70070','Fa2000','B',3, null);
Insert into Enrollment
values('58003','222','70070','Sp2000','A',2, null);
Insert into Enrollment
values('58004','333','80025','Fa2000','A',2, null);
Insert into Enrollment
values('58005','222','80025','Fa2000','C',3, null);
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