Computer Database Design Process Test Online

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Question 1

1. What does data integrity ensure?

Answer

Hardware compatibility

Answer

Data backup

Answer

System speed

Answer

Accuracy and consistency of data

Question 2

2. Which type of database model uses hierarchical relationships?

Answer

Object-oriented model

Answer

Relational model

Answer

Hierarchical model

Answer

Network model

Question 3

3. Which tool is commonly used in database design to model relationships?

Answer

ER Diagram

Answer

PowerPoint

Question 4

4. In ER diagrams, what do diamonds represent?

Answer

Attributes

Answer

Relationships

Question 5

5. What is the purpose of conceptual design in databases?

Answer

To design the high-level structure of the database

Answer

To write SQL queries

Answer

To create reports

Answer

To sort the records

Question 6

6. Which of the following is the first step in the database design process?

Answer

Normalization

Answer

Requirements analysis

Answer

Creating tables

Question 7

7. Which design step involves mapping entities to tables?

Answer

Logical design

Answer

Physical design

Answer

Requirements gathering

Answer

Front-end design

Question 8

8. Which diagram is typically used during the conceptual design phase?

Answer

Gantt chart

Answer

ERD (Entity Relationship Diagram)

Answer

Venn diagram

Question 9

9. Which step comes after logical design?

Answer

Conceptual design

Answer

Requirements gathering

Answer

Physical design

Answer

Report generation

Question 10

10. Which of the following ensures uniqueness of each record in a table?

Answer

Foreign key

Answer

Composite key

Answer

Primary key

Question 11

11. Which of the following is used to eliminate transitive dependency in normalization?

Answer

Fourth Normal Form

Answer

Third Normal Form

Answer

First Normal Form

Answer

Second Normal Form

Question 12

12. In which phase is data volume estimation considered?

Answer

Implementation

Answer

Conceptual

Question 13

13. Which of the following is not a database design activity?

Answer

Normalization

Answer

UI/UX design

Answer

Schema creation

Answer

Conceptual modeling

Question 14

14. In a one-to-many relationship, where is the foreign key placed?

Answer

In both tables

Answer

In the child table

Answer

In neither table

Answer

In the parent table

Question 15

15. Which phase involves testing the database design with sample data?

Answer

Conceptual design

Answer

Prototyping

Answer

Logical design

Answer

Physical implementation

Question 16

16. Which of the following is a 1NF (First Normal Form) rule?

Answer

Use only primary keys

Answer

Eliminate foreign keys

Answer

Remove all repeating groups

Answer

Remove transitive dependencies

Question 17

17. Which of the following is a key advantage of normalization?

Answer

Slower performance

Answer

Better data integrity

Answer

Increased redundancy

Answer

Complicated queries

Question 18

18. In database design, what is an entity?

Answer

A storage device

Answer

A real-world object or concept

Answer

A database administrator

Answer

A SQL query

Question 19

19. What is denormalization?

Answer

Repeating data intentionally for performance

Answer

Reducing primary keys

Answer

Creating more relationships

Answer

Converting forms to HTML

Question 20

20. What is the main purpose of indexing in physical design?

Answer

Delete duplicates

Answer

Improve query performance

Answer

Reduce memory

Answer

Backup data

Question 21

21. What is a composite attribute?

Answer

An attribute that stores numbers only

Answer

An attribute with a default value

Answer

An attribute that links multiple databases

Answer

An attribute made of multiple sub-parts

Question 22

22. Which one is not a rule of normalization?

Answer

Eliminate duplicate columns

Answer

Keep all foreign keys as primary

Answer

Remove repeating groups

Answer

Eliminate transitive dependencies

Question 23

23. Which design phase involves choosing data types for each attribute?

Answer

Conceptual

Question 24

24. Which of the following is not a benefit of good database design?

Answer

Data consistency

Answer

Higher storage cost due to duplication

Answer

Reduced anomalies

Answer

Faster access

Question 25

25. What is included in the physical design phase?

Answer

Writing procedures

Answer

Hardware specifications and indexing

Answer

User permission settings

Answer

Table creation only

Question 26

26. What is a many-to-many relationship?

Answer

Data is encrypted

Answer

One record relates to one only

Answer

One record relates to multiple, and vice versa

Answer

All records are duplicates

Question 27

27. In ER diagrams, what symbol represents an entity?

Question 28

28. What is a candidate key?

Answer

One of the possible choices for primary key

Answer

A key that can never be used

Answer

A key used only for foreign relationships

Answer

A duplicate key

Question 29

29. Which of the following best defines a surrogate key?

Answer

An alternate candidate key

Answer

A user-chosen key

Answer

A system-generated unique key

Answer

A composite key

Question 30

30. Which type of relationship does not require a foreign key?

Answer

One-to-many

Answer

Many-to-one

Question 31

31. Which of the following represents a multi-valued attribute in an ERD?

Answer

Dashed line

Answer

Double oval

Question 32

32. Which of the following converts the ER model into relational form?

Answer

Database normalization

Answer

Data mining

Answer

Logical design

Answer

Conceptual modeling

Question 33

33. Which of the following terms means "an attribute that uniquely identifies an entity"?

Answer

Primary key

Answer

Foreign key

Question 34

34. What does the logical design phase involve?

Answer

Converting ER diagrams into tables

Answer

Formatting text

Answer

Creating user interfaces

Answer

Physical data storage

Question 35

35. Which of the following terms describes the process of defining access controls?

Answer

Query optimization

Answer

Data modeling

Answer

Authorization

Answer

Normalization

Question 36

36. Which key can contain extra attributes but still uniquely identifies a record?

Answer

Candidate key

Answer

Foreign key

Answer

Alternate key

Question 37

37. Which term refers to all possible values an attribute can take?

Answer

Relationship

Question 38

38. Which is used to uniquely identify a weak entity?

Answer

Primary key

Answer

Partial key

Answer

Unique key

Answer

Surrogate key

Question 39

39. Which relationship degree involves three entities?

Question 40

40. Which of the following design issues should be avoided in a good database?

Answer

Well-structured tables

Answer

High redundancy

Answer

Clear primary keys

Answer

Proper indexing

Question 41

41. What is the goal of normalization in database design?

Answer

To create views

Answer

To eliminate data duplication

Answer

To increase redundancy

Answer

To reduce database size

Question 42

42. Which of the following is a strong entity?

Answer

An entity without attributes

Answer

An entity without a primary key

Answer

A derived attribute

Answer

An entity that exists independently

Question 43

43. What is a weak entity?

Answer

An entity that depends on another for identification

Answer

An entity that doesn't store data

Answer

A deleted record

Answer

A temporary table

Question 44

44. What is a functional dependency?

Answer

When two tables are unrelated

Answer

When all attributes are primary keys

Answer

When one attribute determines another

Answer

When data is split into parts

Question 45

45. Which of the following represents a relationship between two entities?

Answer

Foreign key

Question 46

46. What does cardinality refer to in database design?

Answer

The number of columns

Answer

The size of the database

Answer

The number of attributes

Answer

The number of entities in a relationship

Question 47

47. What is the final outcome of the database design process?

Answer

A fully working database system

Answer

A conceptual model

Answer

A logical schema

Answer

A software application

Question 48

48. What is a derived attribute?

Answer

A primary key

Answer

An attribute dependent on calculation

Answer

An attribute copied from another table

Answer

A non-existing attribute

Question 49

49. Which of the following can lead to update anomalies?

Answer

Redundant data

Answer

Proper indexing

Answer

Foreign key constraints

Answer

Normalized data

Question 50

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Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Important Database Design Process Question and Answer

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