Question 1

What is the purpose of mapping the physical model in database design?

Options :

A :

To define the relationships between tables

B :

To define the data types for each column

C :

To optimize database performance

D :

To ensure data integrity

Answer: C

Question 2

What is the role of normalization during the mapping of the physical model?

Options :

A :

To determine the primary key of each table

B :

To improve query performance

C :

To eliminate redundancy in the database

D :

To ensure data integrity and consistency

Answer: C

Question 3

What is a database?

Options :

A :

A program that manages data

B :

A network of interconnected computers

C :

A collection of related data

D :

A physical storage device for data

Answer: C

Question 4

Which SQL statement is used to create a new table?

Options :

A : UPDATE

B :

INSERT INTO

C :

DELETE FROM

D :

CREATE TABLE

Answer: D

Question 5

In a physical model, what is the purpose of denormalization?

Options :

A :

To optimize the database for efficient querying

B :

To reduce data redundancy and improve data integrity

C :

To establish relationships between tables

D :

To define the table structures and attributes

Answer: A

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