Wrong codes? or maybe I don't understand the instructions

Question

The instructions said "Write a procedure that will retrieve an
existing record in Enrollment usiing the student and section Ids
and set the grade to a specified value. (use update instead of
insert) and write another procedure that will assign a given
student a given advisor" I tried but cause I got a lot of
errors!!! any help would be appreciated just email me at
[email protected]. thanks!
create sequence room_seq increment by 1;
create sequence faculty_seq increment by 1;
create sequence student_seq increment by 1;
create sequence section_seq increment by 1;
create sequence enrollment_seq increment by 1;
create sequence room_section_seq increment by 1;
create table course(
courseNo varchar2(10),
name varchar2(30),
credits number,
constraint course_pk primary key (courseNo));
insert into course (courseNo, name, credits) values
('CIS405','ADVANCED DATABASE', 5);
insert into course (courseNo, name, credits) values
('CIS349','INTRO TO DATABASE', 5);
COMMIT;
create table room(
roomID number,
bldg char(1) check (bldg IN ('A','B')),
roomNo varchar2(10),
maxCapacity number,
style varchar2(15) check(style IN
('LECTURE','LECTURE/LAB','LAB','OFFICE')),
constraint room_pk primary key (roomID));
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151A', 50, 'LAB');
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151B', 50, 'LAB');
commit;
create table faculty(
facultyID number,
lname varchar2(30) not null,
fname varchar2(20) not null,
dept varchar2(5),
officeID number,
phone varchar2(15),
email varchar2(75),
rank char(4) check(rank IN ('INST','ASOC','ASST','FULL','SENR')),
constraint faculty_pk primary key (facultyID),
constraint faculty_fk foreign key (officeID) references room
(roomID));
insert into faculty(facultyID, lname, fname, dept, officeID,
phone, email, rank) values
(faculty_seq.nextval, 'CANNON', 'AMY', 'CIS',
6, '77052149003252', '[email protected]','FULL');
commit;
create table equipment(
equipmentID varchar2(30),
roomID number,
type varchar2(20) check(type IN('OVERHEAD PROJECTOR','PORTABLE
PROJECTOR','LAPTOP CONNECTION','DESKTOP COMPUTER','INTERNET
CONNECTION')),
constraint equipment_pk primary key (equipmentID),
constraint equipment_fk foreign key (roomID) references room
(roomID));
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('111',
5, 'DESKTOP COMPUTER');
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('222',
5, 'OVERHEAD PROJECTOR');
commit;
create table student(
stuID number,
lname varchar2(30),
fname varchar2(20),
street varchar2(100),
city varchar2(60),
state char(2),
zip varchar2(9),
major varchar2(5) check(major IN
('ACCT','ECT','EET','BIS','BSIT','CIS','TCOM')),
standing varchar2(10) check(standing IN
('FRESHMAN','SOPHOMORE','JUNIOR','SENIOR')),
gpa number(3,2),
advisor number,
constraint student_pk primary key (stuID),
constraint student_FK foreign key (advisor) references faculty
(facultyID));
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'SMITH', 'HEATHER', 'CIS', 'JUNIOR', 3.8,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'ELLIOTT', 'DAVE', 'CIS', 'JUNIOR', 3.65,
2);
commit;
create table section(
sectionID number,
sectionNo char(1),
courseNo varchar2(10),
facultyID number,
term char(4),
curSize number,
maxSize number,
constraint section_pk primary key (sectionID),
constraint section_course_fk foreign key (courseNo) references
course(courseNo),
constraint section_faculty_fk foreign key (facultyID) references
faculty(facultyID));
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'T', 'CIS405', 1, '1001', 17, 30);
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'G', 'CIS405', 2, '1001', 24, 30);
commit;
create table enrollment(
stuSectionID number,
stuID number,
sectionID number,
grade char(1) check(grade IN('A','B','C','D','F','I','W')),
constraint enrollment_pk primary key (stuSectionID),
constraint enrollment_stu_fk foreign key (stuID) references
student(stuID),
constraint enrollment_section_fk foreign key (sectionID)
references section(sectionID));
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 1);
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 8);
commit;
create table room_section(
roomSectionID number,
sectionID number,
roomID number,
day char(3) check(day IN
('MON','TUE','WED','THU','FRI','SAT','SUN')),
hour date,
term char(4),
constraint room_section_pk primary key (roomSectionID),
constraint room_section_section_fk foreign key (sectionID)
references section(sectionID),
constraint room_section_room_fk foreign key (roomID) references
room(roomID));
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('9:30
AM', 'HH:MI AM'), '1001');
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('10:30
AM', 'HH:MI AM'), '1001');
commit;
SQL> DESC ENROLLMENT
Name Null? Type
STUSECTIONID NOT NULL NUMBER
STUID NUMBER
SECTIONID NUMBER
GRADE CHAR(1)
SQL> CREATE OR REPLACE PROCEDURE Enrollment(
2 p_grade IN CHAR(1),
3 IS
4 v_stuid NUMBER,
5 v_sectionid NUMBER;
6 BEGIN
7 SELECT student_seq.NEXTVAL
8 INTO v_stuid
9 FROM DUAL;
10 UPDATE student
11 (stuid,
12 sectionid,
13 grade,
14 SET (v_stuid,
15 v_sectionid,
16 UPPER (p_grade),
17 COMMIT;
18 DBMS_OUTPUT.PUT_LINE ('Student added');
19 EXCEPTION
20 WHEN OTHERS THEN
21 DBMS_OUTPUT.PUT_LINE ('An error occurred');
22 END AddStudent;
23 /
I got those errors like above!!! I don't understand what the
instructions said. any assistance would be appreciated!

Answer 1

David,
I am afraid that the
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE ('An error occurred');
was my fault. I had intended it as an example to provide only
minimal syntax where no exception handling whatsoever previously
existed. Beau is a student and I am trying to guide him in the
right direction without just writing all of it for him. In
fact, I am afraid I may have already provided too much code
without sufficient explanation. For you and others who may wish
to help, here are the e-mails that provide the background on how
we got to this point, with the most recent on top, starting with
the last resonse I sent to him:
Things that are wrong:
The instructions say to be sure to use the sequence number for
the student's ID, so you should not have p_stuID as an input
parameter. Instead you should create a variable and select the
student_seq.nextval into the variable from the dual table and
use that value to populate the stuid column.
Your input parameters should only have the variable type, not
the size, so just use varchar2 and number.
The check constraints only belong in the script that is used to
create the table, not in your procedure with your input
parameters, so remove them from the procedure.
The order and number of your columns you are inserting into and
values you are inserting must match, so if you insert into fname
then lname, you need to insert the values p_fname then p_lname.
You must either have first name then last name in both or last
name then first name in both, not one way in one and the other
way in the other.
The idea is that when you execute the procedure you specify the
values of the input parameter variable, then use those input
parameter variables to insert the values into the table. You
should not be specifying any specific values anywhere in your
procedure. In other words don't insert 'HEATHER', instead
insert fname, and so on.
You should only have one insert statement. Each time the
procedure is executed, a different set of values will be
provided, and the same insert statement will be used.
Additional suggestions:
Although it is not required, since IN is the default, it is
generally considered to be a good programming practice to use IN
with your input parameters. It just makes the code easier to
read and understand. As you write other code, you will learn to
use OUT for output parameters and IN OUT for parameters that are
both input and output parameters.
It is generally recommended to store all data in upper case,
that is capital letters, so that it is easier to index and
search and avoid duplicates and so on. In order to ensure that
your data is input in upper case, it is a good idea to use the
UPPER function.
Different programmers and companies have different standards
that they use for capitalization, indentation, spacing,
alignment, and so forth to make their code uniform and easier to
read. You may want to look at some various styles and see what
you like or ask what your instructor recommends.
You should add some sort of exception handling section. For
example, if someone attempts to insert a value for standing that
isn't acceptable, then the procedure will fail due to the
constraints and the student will not be added. You probably
want to display some sort of message to the user. You might
also want to display a message if the input is successful.
When you attempt to compile your program and you receive a
message that says "Warning: Procedure created with compilation
errors." or some such thing, then from the SQL> prompt, type
SHOW ERRORS and it will list the error message number, a brief
description of the problem, and the line of code that the
problem occurred on. You can then type LIST and it will list
the code with line numbers, so that you can tell what line
number the error message is referring to.
In the following example, I have fixed the things that were
wrong, formatted it the way I usually do, and added minimal
exception handling and messages. There is a lot more that you
could do. I have also demonstrated how the program can be
tested and the results of proper input and improper input. In
the example below, two students are added correctly, then an
attempt to add another fails because the standing is not valid
and violates a check constraint, because graduate is not
acceptable. After each execution of the procedure, I have
queried the table, so that you can see what was added and what
was not.
SQL> CREATE OR REPLACE PROCEDURE AddStudent
2 (p_fname IN VARCHAR2,
3 p_lname IN VARCHAR2,
4 p_major IN VARCHAR2,
5 p_standing IN VARCHAR2,
6 p_gpa IN NUMBER)
7 IS
8 v_stuid NUMBER;
9 BEGIN
10 SELECT student_seq.NEXTVAL
11 INTO v_stuid
12 FROM DUAL;
13
14 INSERT INTO student
15 (stuid,
16 fname,
17 lname,
18 major,
19 standing,
20 gpa)
21 VALUES (v_stuid,
22 UPPER (p_fname),
23 UPPER (p_lname),
24 UPPER (p_major),
25 UPPER (p_standing),
26 p_gpa);
27
28 COMMIT;
29 DBMS_OUTPUT.PUT_LINE ('Student added');
30 EXCEPTION
31 WHEN OTHERS THEN
32 DBMS_OUTPUT.PUT_LINE ('An error occurred');
33 END AddStudent;
34 /
Procedure created.
SQL> COLUMN fname FORMAT A15
SQL> COLUMN lname FORMAT A15
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
no rows selected
SQL> SET SERVEROUTPUT ON
SQL> EXEC AddStudent ('HEATHER', 'SMITH', 'CIS', 'JUNIOR', 3.8)
Student added
PL/SQL procedure successfully completed.
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
STUID FNAME LNAME MAJOR
STANDING GPA
1 HEATHER SMITH CIS
JUNIOR 3.8
SQL> EXEC AddStudent ('Dave', 'Elliott', 'CIS', 'junior', 3.65)
Student added
PL/SQL procedure successfully completed.
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
STUID FNAME LNAME MAJOR
STANDING GPA
1 HEATHER SMITH CIS
JUNIOR 3.8
2 DAVE ELLIOTT CIS
JUNIOR 3.65
SQL> EXEC AddStudent ('KARL', 'WEBSTER', 'CIS', 'GRADUATE', 3.2)
An error occurred
PL/SQL procedure successfully completed.
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
STUID FNAME LNAME MAJOR
STANDING GPA
1 HEATHER SMITH CIS
JUNIOR 3.8
2 DAVE ELLIOTT CIS
JUNIOR 3.65
SQL>
I am going home now. Sometimes I get a chance to respond to my
e-mail daily and sometimes I may not get to it for a week. It
is better if you post your questions on one of the forums where
you may get more rapid responses from many people. I have
provided links to some forums that I browse below. If you have
internet access, you should be able to just click on them. Some
may require you to register, but they are all free.
The following is a link to the Oracle Technology Network forums,
hosted by Oracle Corporation, where I recommend the SQL and
PL/SQL discussions.
http://forums.oracle.com/forums/homepage.jsp
The following is a link to the PL/SQL forums of the REVEALNET
site, where noted author Steven Feuerstein is one of the SYSOPS,
where, for you, I recommend the "Beginner PL/SQL Developer
Questions" discussions.
http://PIPETALK.REVEALNET.COM/~PLSQL/LOGIN
The following is a link to another forum, where I recommend the
RDBMS, SQL, PL/SQL discussions.
http://www.orafans.com/cgi-bin/orafans/ubb/Ultimate.cgi?
action=intro
I would still like to know where you got my e-mail address, what
class you are taking, who your instructor is, and so forth.
Please do let me know.
Good luck,
Barbara
-----Original Message-----
From:     bseo.ga [SMTP:[email protected]]
Sent:     Wednesday, December 19, 2001 12:19 AM
To:     Boehmer, Barbara A.
Subject:     Re: PL/SQL
Importance:     High
what is wrong with the compilation errors?
CREATE or REPLACE PROCEDURE AddStudent(
p_stuID number,
p_lname varchar2(30),
p_fname varchar2(20),
p_major varchar2(5) check(major IN
('ACCT','ECT','EET','BIS','BSIT','CIS','TCOM')),
P_standing varchar2(10) check(standing IN
('FRESHMAN','SOPHOMORE','JUNIOR','SENIOR')),
P_gpa number(3,2) IS
BEGIN
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'SMITH', 'HEATHER', 'CIS', 'JUNIOR', 3.8,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'ELLIOTT', 'DAVE', 'CIS', 'JUNIOR', 3.65,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'WEBSTER', 'KARL', 'CIS', 'SENIOR', 3.2,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'COX', 'STACEY', 'CIS', 'SENIOR', 2.7, 1);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'HOWARD', 'BRIAN', 'CIS', 'JUNIOR', 3.18,
1);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'DENNIS', 'KELLY', 'CIS', 'SENIOR', 4.0,
1);
COMMIT;
END;
SQL> /
Warning: Procedure created with compilation errors.
----- Original Message -----
From: Boehmer, Barbara A. <mailto:[email protected]>
To: 'bseo.ga' <mailto:[email protected]>
Sent: Tuesday, December 18, 2001 5:17 PM
Subject: RE: PL/SQL
I am not sure what part of it you don't understand.
The first section that you included is a script that you need to
copy and run, in order to create the sequences, tables, and data
that you will need to complete your assignment. You will need
to edit an empty .sql file, copy the script into the file, save
the file, then start the file. For example:
SQL> EDIT test
Type or copy the script and save the file.
SQL> START test
You should see various messages as the items are created. Then
you can use the following commands to see the tables and
sequences that you have created:
SQL> SELECT table_name FROM user_tables;
SQL> SELECT sequence_name FROM user_sequences;
To show the structure of an individual table, for example the
course table:
SQL> DESC course
To show the data in an individual table, like the course table:
SQL> SELECT * FROM course;
In the second section that you have provided, your instructor is
asking you to create three different procedures to do three
different things. To create a procedure, you edit a .sql file,
type the code to create the procedure, save the file, then start
the file. I usually make the .sql file name the same as the
procedure name. So, for example, in number 1, you are asked to
create a procedure named AddStudent, so you would:
SQL> EDIT AddStudent
Type your code.
Save the file.
SQL> START AddStudent
You should receive a message that says:
Procedure created.
Then, to execute your procedure:
SQL> EXEC AddStudent (put your parameter values here)
The basic syntax for creating a pl/sql procedure is:
CREATE OR REPLACE PROCEDURE procedure_name
(put your parameters here)
AS
put your variable declarations here;
BEGIN
put your code that you want to execute here,
like insert statements and update statements;
END procedure_name;
So, if you are trying to create a procedure to add a new student
(which means inserting a row into the student table), you will
need to accept the values (parameters) that you are going to
insert, then insert them:
CREATE OR REPLACE PROCEDURE AddStudent
(p_first .....
p_last .....
p_major .....
p_standing .....
p_GPA .....)
AS
BEGIN
INSERT INTO student .....;
END AddStudent;
I have just given you a starting format and deliberately left
out a lot, because you will learn more by doing it yourself. I
hope that makes things a little clearer.
I would like to know a little more about the class you are
taking. Please let me know where you are going to school, who
your instructor is, what is the name of the class you are
taking, and what book are you using. Also, please let me know
where you got my e-mail address (from one of the forums?)
Good luck,
Barbara
-----Original Message-----
From: bseo.ga [mailto:[email protected]]
Sent: Tuesday, December 18, 2001 5:57 PM
To: [email protected]
Subject: PL/SQL
Importance: High
I don't understand reading the following instructions from my
professor and the books. help would be apppreciated.
-------------create the sequence numbers needed to generate
primary key values
create sequence room_seq increment by 1;
create sequence faculty_seq increment by 1;
create sequence student_seq increment by 1;
create sequence section_seq increment by 1;
create sequence enrollment_seq increment by 1;
create sequence room_section_seq increment by 1;
create table course(
courseNo varchar2(10),
name varchar2(30),
credits number,
constraint course_pk primary key (courseNo));
insert into course (courseNo, name, credits) values
('CIS405','ADVANCED DATABASE', 5);
insert into course (courseNo, name, credits) values
('CIS349','INTRO TO DATABASE', 5);
COMMIT;
create table room(
roomID number,
bldg char(1) check (bldg IN ('A','B')),
roomNo varchar2(10),
maxCapacity number,
style varchar2(15) check(style IN
('LECTURE','LECTURE/LAB','LAB','OFFICE')),
constraint room_pk primary key (roomID));
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151A', 50, 'LAB');
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151B', 50, 'LAB');
commit;
create table faculty(
facultyID number,
lname varchar2(30) not null,
fname varchar2(20) not null,
dept varchar2(5),
officeID number,
phone varchar2(15),
email varchar2(75),
rank char(4) check(rank IN
('INST','ASOC','ASST','FULL','SENR')),
constraint faculty_pk primary key (facultyID),
constraint faculty_fk foreign key (officeID) references room
(roomID));
insert into faculty(facultyID, lname, fname, dept, officeID,
phone, email, rank) values
(faculty_seq.nextval, 'CANNON', 'AMY', 'CIS',
6, '77052149003252', '[email protected]','FULL'
<mailto:'[email protected]','FULL'>);
commit;
create table equipment(
equipmentID varchar2(30),
roomID number,
type varchar2(20) check(type IN('OVERHEAD PROJECTOR','PORTABLE
PROJECTOR','LAPTOP CONNECTION','DESKTOP COMPUTER','INTERNET
CONNECTION')),
constraint equipment_pk primary key (equipmentID),
constraint equipment_fk foreign key (roomID) references room
(roomID));
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('111',
5, 'DESKTOP COMPUTER');
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('222',
5, 'OVERHEAD PROJECTOR');
commit;
create table student(
stuID number,
lname varchar2(30),
fname varchar2(20),
street varchar2(100),
city varchar2(60),
state char(2),
zip varchar2(9),
major varchar2(5) check(major IN
('ACCT','ECT','EET','BIS','BSIT','CIS','TCOM')),
standing varchar2(10) check(standing IN
('FRESHMAN','SOPHOMORE','JUNIOR','SENIOR')),
gpa number(3,2),
advisor number,
constraint student_pk primary key (stuID),
constraint student_FK foreign key (advisor) references faculty
(facultyID));
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'SMITH', 'HEATHER', 'CIS', 'JUNIOR', 3.8,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'ELLIOTT', 'DAVE', 'CIS', 'JUNIOR', 3.65,
2);
commit;
create table section(
sectionID number,
sectionNo char(1),
courseNo varchar2(10),
facultyID number,
term char(4),
curSize number,
maxSize number,
constraint section_pk primary key (sectionID),
constraint section_course_fk foreign key (courseNo) references
course(courseNo),
constraint section_faculty_fk foreign key (facultyID)
references faculty(facultyID));
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'T', 'CIS405', 1, '1001', 17, 30);
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'G', 'CIS405', 2, '1001', 24, 30);
commit;
create table enrollment(
stuSectionID number,
stuID number,
sectionID number,
grade char(1) check(grade IN('A','B','C','D','F','I','W')),
constraint enrollment_pk primary key (stuSectionID),
constraint enrollment_stu_fk foreign key (stuID) references
student(stuID),
constraint enrollment_section_fk foreign key (sectionID)
references section(sectionID));
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 1);
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 8);
commit;
create table room_section(
roomSectionID number,
sectionID number,
roomID number,
day char(3) check(day IN
('MON','TUE','WED','THU','FRI','SAT','SUN')),
hour date,
term char(4),
constraint room_section_pk primary key (roomSectionID),
constraint room_section_section_fk foreign key (sectionID)
references section(sectionID),
constraint room_section_room_fk foreign key (roomID)
references room(roomID));
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('9:30
AM', 'HH:MI AM'), '1001');
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('10:30
AM', 'HH:MI AM'), '1001');
commit;
The lab notes from my professor said
1. your system will often need to create a new student. Write
PL/SQL code for an object named AddStudent that will take values
for first and last name, major, standing and GPA and add a new
record in the Student table. Since advisors aren't assigned at
registration time, we'll add their advisor at a later date.
Don't worry about the student's address. Be sure to use the
sequence number for the student's ID.
2. Write a procedure that will retrieve an existing record in
Enrollment usiing the student and section Ids and set the grade
to a specified value. (use update instead of insert)
3. Write another procedure that will assign a given student a
given advisor.