IN DESPERATE NEED OF HELP WITH CODE...

Question

I HAVE DONE EVERTHING CORRECTLY: TABLE DROP SEQUENCE CHECKED, ALL SYNTAX WERE ALSO CHECKED AND SPELLING WERE ALSO VERIFIED... BUT I AM STILL HAVING PROBLEMS... HERE IS THE CODE....
THANKS....
set pause on
spool output-file
echo on
rem Asfa Taitt
rem Project2
drop table T_ENROLL;
drop table T_SECTION;
drop table T_STUDENT;
drop table T_INSTRUCTOR;
drop table T_COURSES;
drop table T_SCHOOL;
drop table T_MAJOR;
create table T_ENROLL (
Semester Char(7),
Course Char(7),
Sec_No Char(4),
Student_No integer,
GOS Char(1),
Major char(4),
foreign key (Student_No) references T_STUDENT,
foreign key (Course) references T_COURSES,
foreign key (Sec_No) references T_SECTION,
foreign key (Major) references T_MAJOR);
create table T_SCHOOL (School char(4) not null,
primary key (School));
create table T_MAJOR (Major char(4) not null,
School char(4),
primary key (Major),
foreign key (School) references T_SCHOOL);
create table T_STUDENT (Student_No integer not null,
Student_Name Char(20),
Major char(4),
primary key (Student_No),
foreign key (Major) references T_MAJOR);
create table T_INSTRUCTOR (Instructor_No integer not null,
Instructor_Name Char(20),
School char(4),
primary key (Instructor_No),
foreign key (School) references T_SCHOOL);
create table T_COURSES (Course Char(7) not null,
MAX_Allowed Integer,
Credit_Hours Integer,
GOA Char(1),
primary key (Course));
create table T_SECTION (semester Char(7),
School char(4),
Course Char(7),
Sec_No Char(4) not null,
Sec_Loc char(5),
Section_Time char(13),
Instructor_No integer,
primary key (Sec_No),
foreign key (Instructor_No) references T_INSTRUCTOR,
foreign key (Course) references T_COURSES,
foreign key (School) references T_SCHOOL);
insert into T_COURSES values ('IFSM410',30,3,'R');
insert into T_COURSES VALUES ('CMIS300',30,3,'R');
insert into T_INSTRUCTOR values (111223333,'BABISKIN ROBERT G');
insert into T_INSTRUCTOR values (222997777,'CODD TED E');
insert into T_SECTION values ('SPR01','BUS','IFSM410','4031','RM32','TUTH3:30-5:00',111223333);
insert into T_SECTION values ('SPR01','ENG','CMIS300','4011','RM407','MWF 1:30-2:30',222997777);
insert into T_STUDENT values (222445555,'HARRIS JOHN H');
insert into T_STUDENT values (215557777,'LITTLE BOB K');
insert into T_STUDENT values (517443333,'JONES JANE G');
insert into T_ENROLL values ('SPR01','IFSM410','4031',222445555,'R','IFSM');
insert into T_ENROLL values ('SPR01','CMIS300','4011',215557777,'R','CMIS');
insert into T_ENROLL values ('SPR01','CMIS300','4011',222445555,'R','IFSM');
insert into T_ENROLL values ('SPR01','CMIS300','4011',517443333,'R','CMIS');
insert into T_ENROLL values ('SPR01','IFSM410','4031',517443333,'R','CMIS');
DELETE from T_ENROLL
WHERE T_ENROLL.Student_No = 222445555 and T_ENROLL.Course = 'IFSM410';
alter table
commit;
select * from T_INSTRUCTOR;
select * from T_COURSES;
spool ofF

Answer 1

Try this.
Rob
-- First we need to define some tablespaces
DEFINE idxtbs='idx01'
DEFINE datatbs='data01'
-- There is more then one way to skin a cat. You can disable all the constraints
-- in these tables, then drop them.
spool x
Select 'alter table ' | | table_name | | ' drop constraint ' | | constraint_name | | ';'
from user_constraints
where table_name in (T_ENROLL;
,T_SECTION
,T_STUDENT
,T_INSTRUCTOR
,T_COURSES
,T_SCHOOL
,T_MAJOR);
spool off
@x.lst
host del x.lst
-- Now drop your tables
set pause on
spool output-file
echo on
rem Asfa Taitt
rem Project2
drop table T_ENROLL;
drop table T_SECTION;
drop table T_STUDENT;
drop table T_INSTRUCTOR;
drop table T_COURSES;
drop table T_SCHOOL;
drop table T_MAJOR;
-- I changed all the chars to varchar2, this is much better form
-- notice the addition of tablespace, freespace and storage
create table T_ENROLL (
Semester Varchar2(7),
Course Varchar2(7),
Sec_No Varchar2(4),
Student_No integer,
GOS Varchar2(1),
Major varchar2(4)
tablespace &datatbs
pctfree 30
pctused 70
storage (initial 1M next 1M pctincrease 0)
create table T_SCHOOL (School varchar2(4) not null)
create table T_MAJOR (Major varchar2(4) not null,
School varchar2(4)
tablespace &datatbs
pctfree 30
pctused 70
storage (initial 1M next 1M pctincrease 0)
create table T_STUDENT (Student_No integer not null,
Student_Name Varchar2(20),
Major varchar2(4)
tablespace &datatbs
pctfree 30
pctused 70
storage (initial 1M next 1M pctincrease 0)
create table T_INSTRUCTOR (Instructor_No integer not null,
Instructor_Name Varchar2(20),
School varchar2(4)
tablespace &datatbs
pctfree 30
pctused 70
storage (initial 1M next 1M pctincrease 0)
create table T_COURSES (Course Varchar2(7) not null,
MAX_Allowed Integer,
Credit_Hours Integer,
GOA Varchar2(1)
tablespace &datatbs
pctfree 30
pctused 70
storage (initial 1M next 1M pctincrease 0)
create table T_SECTION (semester Varchar2(7),
School varchar2(4),
Course Varchar2(7),
Sec_No Varchar2(4) not null,
Sec_Loc varchar2(5),
Section_Time varchar2(13),
Instructor_No integer
tablespace &datatbs
pctfree 30
pctused 70
storage (initial 1M next 1M pctincrease 0)
-- enable all your primary key and foreign key constraints seprate from creating the table.
--t_enroll needs a primary key. always have a primary key.
alter table t_enroll add constraint t_enroll_pk primary key (id)
using index tablespace &idxtbs
-- the alter table add constraint takes the form
-- add constraint <constraint_name> foreign key <column name> references <tablename(column name)>
alter table T_ENROLL add constraint t_enroll_fk1
foreign key (student_no) references
t_student(student_no)
--do the same for the rest of your foreign keys.
insert into T_COURSES values ('IFSM410',30,3,'R');
insert into T_COURSES VALUES ('CMIS300',30,3,'R');
insert into T_INSTRUCTOR values (111223333,'BABISKIN ROBERT G');
insert into T_INSTRUCTOR values (222997777,'CODD TED E');
insert into T_SECTION values ('SPR01','BUS','IFSM410','4031','RM32','TUTH3:30-5:00',111223333);
insert into T_SECTION values ('SPR01','ENG','CMIS300','4011','RM407','MWF 1:30-2:30',222997777);
insert into T_STUDENT values (222445555,'HARRIS JOHN H');
insert into T_STUDENT values (215557777,'LITTLE BOB K');
insert into T_STUDENT values (517443333,'JONES JANE G');
insert into T_ENROLL values ('SPR01','IFSM410','4031',222445555,'R','IFSM');
insert into T_ENROLL values ('SPR01','CMIS300','4011',215557777,'R','CMIS');
insert into T_ENROLL values ('SPR01','CMIS300','4011',222445555,'R','IFSM');
insert into T_ENROLL values ('SPR01','CMIS300','4011',517443333,'R','CMIS');
insert into T_ENROLL values ('SPR01','IFSM410','4031',517443333,'R','CMIS');
DELETE from T_ENROLL
WHERE T_ENROLL.Student_No = 222445555 and T_ENROLL.Course = 'IFSM410';
alter table
commit;
select * from T_INSTRUCTOR;
select * from T_COURSES;
spool ofF
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