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a.connect to sample
create table USTStudent(
StudentId integer not null,
StudentName varchar(30),
Address vachar(30)
Subject_Id Char(10) not null,
Mark Integer

create table USTSubject(
Subject_Name varchar(30) not null,
Subject_CODE Char(10) not null

Alter table USTSubject
Add constraint Subject_Code_pk primary key(Subject_Code);
Alter table USTSubject
Add constraint StudentId_pk primary key(StudentId);
Add constraint Subject_ID_fk foreign key(StudentId) references USTSubject(Subject_Code)
Add constraint Mark_ck check(Mark between 40 to 100);
Insert into USTStudents values(
('9400074', 'JASON', '9', 'Ozie Hall', 'MA4545', '90'),
('9200020', 'TEDDY', '90', 'Second Hall', 'MA4545', '65'),
('9875620', 'LESIE', '87', 'River Road', 'CS1200', '78'),
('9200021', 'TOM' , '25', 'First Hall', 'MA4545', '75'),
('9875630', 'SUSAN', '80', 'River Dale', 'CS1200', '78')

Insert into USTSubjects values(
('CS1200', 'Information Systems'),
('MA4545', 'The Diversity of Life'),
('CS1300', 'Intro to Computing'),
('CH8794', 'Intro of Chemistry'),
('MA1235', 'Pure Mathematics')

Insert into USTStudents values(
('8745520', 'BEN', '79', 'Main Street', 'CS8794', 'Null'),
('9841220', 'WENDY', '124', 'Long Hall', 'CS1200', '85'),
('984120', 'WENDY', '124', 'Long Hall', 'CS1200', '85')

select * from USTStudents;
select * from USTSubject;
update USTStudents
set Subject_ID='CS1200'
where Student_ID='9400074';
Select Address from USTStudents
where Address ='%Hall';
Select Mark from USTStudents
where Mark >=65;
Select Student_ID from USTStudents
where Mark=75;
Select Student_ID,Student_Name from USTStudents
where Subject_Code='CS1200';
Select Sum(Mark) from USTStudents as TotalScores
group by Subject_ID;

db2 connect to sample

db2 "create table uststudent
(studentid integer not null,
studentname varchar(30),
address varchar(30),
subject_id char(10) not null,
mark integer)"
db2 "create table ustsubject
(subject_code char(10),
subject_name varchar(30),
primarykey (subject_code))"

db2 alter table ustsubject
add constraint pk primary key(subject_code);
db2 alter table
add constraint pk primary key(student_id);
add constraint fk foreign key(subject_id) referrences ustsubject(subject_code);
add constraint ck check (Mark between 40 to 10);

db2 "insert into uststudent
(student_id,student_name,address,subject_id,mark) values
('9400074','JASON','9, Ozie Hall','MA4545','90'),
('9200020','TEDDY','90, Second Hall','MA4545','65'),
('9875620','LESIE','87, River Road','CS1200','78'),
('9200021','TOM','25, First Hall','MA4545','75'),
('9875630','SUSAN','80, River Dale','CS1200','78')"

db2 "insert into ustsubject
(subject_code, subject_name) values
('CS1200','Information Systems'),
('MA4545','The Diversity of Life'),
('CS1300','Intro to Computing'),
('CH8794','Intro of Chemistry'),
('MA1235','Pure Mathematics')"

db2 "Insert into USTStudents
student_id,student_name,address,subject_id,mark) values
('8745520', 'BEN', '79', 'Main Street', 'CS8794', 'Null'),
('9841220', 'WENDY', '124', 'Long Hall', 'CS1200', '85'),
('984120', 'WENDY', '124', 'Long Hall', 'CS1200', '85')"


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