G.C.E ORDINARY LEVEL
PASTPAPER
CHAPTER IX
SECTION II | DATABASE
OL 2021
01. Which of the following statements are correct regarding relational database?
A - A record is a collection of fields.
B - A table is a collection of records.
C - A relational database is a collection of tables.
a. A and B only
b. A and C only
c. B and C only
d. All A, B and C
•
Questions 02 to 04 are based on the following partly shown database tables that are used to
store data about students, subjects and enrollment details in a school.
Student
Subject
Student_ID Student_Name
Subject_ID
Subject_Name
Teacher_Name
1001
Ayisha
S001
Chemistry
Perera
1002
Asma
S002
Physics
Selvam
1003
Amra
S003
Combined Maths
Nazwar
1004
Bisra
S004
Geography
Silva
S005
Political Science
Almeida
Enroll
Student_ID
1001
1005
1003
1001
Subject_ID
S002
S001
S002
S003
Date
04/01/2022
05/01/2022
09/01/2022
04/01/2022
02. What would be the primary key of the Enroll table?
(1) Student_ID
(2) Subject_ID
(3) Subject_ID + Date
(4) Student_ID + Subject_ID
03. What would be a foreign key in the database?
(1) Subject_ID in the Subject table
(2) Student_ID in the Student table
(3) Date in the Enroll table
(4) Subject_ID in the Enroll table
04. Shane dropped the “Geography” subject and enrolled for the “Political Science” subject. Which
table/tables needs/need to be updated for this purpose?
(1) Subject table
(3) Enroll table
(2) Subject table and Enroll table
(4) Student table, Subject table and Enroll table
05. Following are the partly shown database tables that are used to store details about food items
purchases and suppliers of a school canteen. The canteen sells food items which are
purchased from the suppliers.
Table: Item
(Contains data of the items available in the canteen with their selling prices in Rupees)
Item_ID
Item_Name
Selling_Price
F001
Tea bun
40
F002
Fish roll
70
F003
Chicken roll
65
F004
Vegetable roll
60
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Table: Purchase
(Contains data of the purchasing prices of items from different suppliers. Note that a particular
food item can be purchased from many suppliers for different prices)
Item_ID
Supplier_ID
Purchasing_Price
F001
S007
30
F002
S004
35
F003
S001
60
F004
S004
55
Table: Supplier
(Contains data about suppliers)
Supplier_ID
Supplier_Name
Supplier_Location
S001
Saman
Maradana
S002
Raj
Borella
S003
Sharaf
Dematagoda
S004
Shane
Maradana
(1)
(a) Write down the primary key of the Purchase table.
(b) Write down the foreign keys in the Purchase table.
(2) Which tables need to be updated to accommodate the following?
(a) The supplier S004 changes his location (Supplier Location) to Rajagiriya.
(b) The canteen decides to increase the selling price of a fish roll to 80 Rupees due to 10
Rupee price increase by the supplier.
(3) A new supplier Kamal (Supplier_ID: S008) from Wellawatte starts supplying vegetable rolls
to the school canteen for 50 rupees. Write down the new record(s) to be added to the
relevant table(s) for the above change. Use the tablename → (field1. field2, ...) format for
each new record.
(4) What are the appropriate tables to be joined to write a query to find the names of the
suppliers who supply fish rolls to the canteen?
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OL 2020
•
Questions 1 to 2 are based on the following database tables that are used to store data about
authors, books, and the books written by authors.
Table: Author
Table: Book
Table: Author_Book
01. What would be the primary key of Author_Book table?
a. AuthorID
c.
b. BookID
d. AuthorID + Royalty_Share
AuthorID + BookID
02. Consider the following statements:
A – AuthorID in the Author table is a foreign key
B – AuthorID in the Author_Book table is a foreign key
C – BookID in the Book table is a primary key
Which of the above statements are correct?
a. A and B only
c.
B and C only
b. A and C only
d. All A, B and C
03. Who is the author of the book titled "Mathematics with Fun"?
a. Anil Ratnayake
c.
Sharaf Khan
b. Indika Serasinghe
d. Lalith Wijenayake
Part II
04. Consider the partly shown Purchase database table listing the purchase date and quantities of
different items purchased by different suppliers:
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i.
Write down the number of fields and records in the above table.
ii.
Write down the most suitable data types for PurchaseDate and Quantity.
05. Following are the partly shown relational database tables that are used to store information
about supervisors, projects, and the projects supervised by supervisors in a University.
Table: Supervisor
Table: Project
i.
Table: Supervisor_Project
State whether the following statements are TRUE or FALSE.
a. SupervisorID is a foreign key of Supervisor_Project table.
b. ProjectID is the primary key of Supervisor_Project table.
ii.
Which table(s) need(s) to be updated to accommodate the following changes?
a. Anura Wijenayake is assigned as a Supervisor for the project P002 with an allowance of
10,000.
b. A new supervisor, Pradeep Dissanayake (SupervisorID: S06) joined the Department of
Chemistry and was assigned as a supervisor for an ongoing project (ProjectID: P003)
with an allowance of 15,000.
iii.
On 15/09/2020, the University started a new project (ProjectID: P006) with Mohamed
Nazwar and Raj Selvam as supervisors. An amount of 11,000 is allocated for each
supervisor. Write down the new record(s) to be added to the relevant table(s) for the above
change.
Use the format tablename
iv.
(field], field2, ..) for each record.
What are the most appropriate tables to be joined to write a query to find the Department
name(s) of the supervisor(s) who supervise(s) the project P001?
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OL 2019
• Questions 4 to 7 are based on the following partly shown database tables that are used to store
data about books, students, and books reserved by students in a school library.
Table: Book (Contains the details of books and whether each book is reserved or not)
Table: Student (Contains details of all students in school and whether each student is a library
member or not)
Table: Reservation (Contains details about books reserved by students)
01. How many fields are in the student table?
a. 2
b. 3
c.
4
d. 5
02. What would be an example of a foreign key in the database?
a. Book_ID in Reservation table
b. Grade in Student table
c.
Reserved_Date in Reservation table
d. Title in Book table
03. What is the title of the book reserved by Kumar?
a. Classic Short Stories
c.
Poem Writing
b. Effective Writing
d. Vocal Theory
04. A student gets the library membership and reserves a book. What tables need to be updated
for this purpose?
a. Book table and Reservation table
b. Book table and Student table
c.
Reservation table and Student table
d. Book table, Reservation table and Student table
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Part II
05. Following are the partly shown tables of the relational database of a sports team management
system in a school.
Table: Player (Includes the descriptions
Table: Player_Team (Contains the players of
of players)
each team and their years of joining)
Table: Team (Contains the names and age categories of teams and their captains)
(Note: CaptainID is a valid PlayerID)
a.
i.
Write down the primary key of the Team table.
ii.
Write down the possible primary keys available in the Player table.
b. Which table(s) need(s) to be updated to accommodate the following changes?
i.
A new student, Piyal Alwis (StudentID: S4205), is admitted to the school and joins the
U17 Cricket team in 2019.
ii.
Nimal Fernando is appointed the captain of the U19 Volleyball team.
i.
Write down the new record(s) to be added to the relevant table(s) for the change
c.
mentioned in part (ii) (a).
ii.
Use the format: tablename
(field1, field2, ...) for each record.
(Note: Assume that Piyal Alwis is assigned the PlayerID P1120)
iii. In 2019, the school starts an Under 17 (U17) Football team (TeamID: T7) and appoints
Shane Almaida as the captain. Write down the new record(s) to be added to the
relevant table(s) for the above change.
iv. Use the format: tablename
(field1, field2, ...) for each record.
(Note that Shane Almaida is currently playing in the U17 Cricket team.)
d. Which tables are to be joined to write a query to find the name of the U19 Cricket captain?
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OL 2018
ISBN
BookID
BookName
PublisherID
Edition
98123455
2304
ICT forLife
6
2
98123456
2305
ICT for Life
6
2
98123457
2306
Database System
2
4
01. What is a suitable field for the primary key?
a. BookID
b. BookName
c.
ISBN
d. PublisherID
c.
Edition
d. PublisherID
02. What is a suitable field for the Foreign Key?
a. BookID
b. BookName
Marks Table
Subject Table
Admission_No
Subject_Code
Marks
Subject_Code
Subject_Name
1111
80
89
80
ICT
1112
33
69
33
History
1113
34
72
34
Science
1111
33
78
03. Which of the following id incorrect regarding the Marks and Subjects tables?
a. Admission_No and Subject_No in Marks Table is Composite Key
b. Admission_No is a Primary Key in Marks Table
c.
Subjct_Code is a Foreign Key in Marks Table
d. There is a one-to-many Relationship between Subjects table and Marks Table
Part B
04. Consider the Employee and Division Tables given below.
Employee Table
Emp_Name
Emp_ID
Designation
Nadha
E1
Manager
Hana
E2
Engineer
Nisma
E3
ICT Officer
Mariyam
E4
Accountant
Div_ID
Division Table
i.
Division_Name
Division_Number
Division_Location
Finance
1
Col 1
Stores
2
Col 2
Sales
3
Col 3
Assume that a new Division name IT located in Col 3 to be added. Write down the new record
that has to be added and the corresponding table name.
ii.
Nadha and Hana works at the Stores. Nisma works at the Finance Division. Mariyam recently
joined the IT division. Write down the value and fill the above table.
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OL 2017
Student Table
Marks Table
DOB
Name
Student_No
Class
Sub_Code
Student_No
Marks
20-11-95
Afham
1001
1A
01
1001
85
17-12-95
Himaya
1002
1A
02
1001
80
21-10-95
Hima
1003
1A
01
1002
65
18-12-95
Zuha
1004
1B
03
1003
70
Subject Table
Sub_Code
Subject
01
Sinhala
02
Art
03
English
01. How many fields are in the subject table?
a. 2
b. 3
c.
4
d. 6
02. What would be the most suitable field as the primary key for the Student Table?
a. Student_No
c.
Name
b. BOD
d. Class
03. What would be an example for a foreign key in the database?
a. Sub_Code in Subject Table
c.
Marks in Marks Table
b. Sub_Code in Marks Table
d. DOB in Student Table
04. How many marks did Kapila obtain for English?
a. 65
c.
80
b. 70
d. 85
05. Consider the following statements related to database software:
A - A Collection of fields related to one object is called a record
B - A collection of related tables is called a database
C - A Foreign key of one table is the primary key of another table
Which of the above statements are correct?
a. A and B
c.
B and C
b. A and C
d. All above
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