Computer Basic Concepts and Terminology of Databases Test Online

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Question 1

1. Which SQL keyword is used to sort the result set?

Question 2

2. Which SQL statement is used to create a new database?

Answer

BUILD DATABASE

Answer

CREATE DATABASE

Answer

NEW DATABASE

Answer

MAKE DATABASE

Question 3

3. What is the full form of RDBMS?

Answer

Registered Data-Based Model Software

Answer

Relational Database Management System

Answer

Real Data Backup and Management System

Answer

Random Data Management Software

Question 4

4. Which SQL statement is used to add new records?

Question 5

5. What does SQL stand for?

Answer

Simplified Query Language

Answer

Structured Query Language

Answer

Server Query Language

Answer

Structured Quick Language

Question 6

6. Which of the following is used to store and manage data in a structured format?

Answer

Operating system

Answer

Spreadsheet

Question 7

7. Which SQL command is used to remove duplicate rows from results?

Question 8

8. What is a record in a database?

Answer

A column of data

Answer

A row representing one entry

Answer

A file format

Answer

A table of values

Question 9

9. What does the term schema refer to in databases?

Answer

A backup of data

Answer

A report format

Answer

A data entry form

Answer

A structure of tables and relationships

Question 10

10. Which clause is used to filter records in SQL?

Question 11

11. What is a foreign key?

Answer

A field that stores user passwords

Answer

A field that links one table to another

Answer

A key used in multiple databases

Answer

A duplicate of a primary key

Question 12

12. In relational databases, a table is also called a:

Question 13

13. Which one is not an SQL data type?

Question 14

14. Which command is used to grant user permissions in SQL?

Question 15

15. What is the difference between DELETE and TRUNCATE in SQL?

Answer

DELETE is faster

Answer

DELETE removes structure, TRUNCATE removes records

Answer

TRUNCATE allows WHERE clause

Answer

DELETE removes records one by one, TRUNCATE removes all instantly

Question 16

16. Which of these is a relational database?

Question 17

17. Which constraint ensures that a column cannot have NULL values?

Question 18

18. Which command is used to modify the structure of a table?

Question 19

19. What does ERD stand for?

Answer

Extended Relational Data

Answer

Entity Relational Design

Answer

Entry Record Document

Answer

Entity Relationship Diagram

Question 20

20. Which of the following is a NoSQL database?

Answer

PostgreSQL

Question 21

21. Which key ensures uniqueness for each record in a table?

Answer

Composite key

Answer

Foreign key

Answer

Primary key

Answer

Secondary key

Question 22

22. Which SQL clause is used to limit the number of records returned?

Question 23

23. Which SQL command is used to change existing records?

Question 24

24. What is the result of a JOIN operation?

Answer

Deletion of a record

Answer

Combining rows from multiple tables based on a related column

Answer

Encrypting values

Answer

Insertion of a row

Question 25

25. What is a database index used for?

Answer

Increasing search speed

Answer

Backing up data

Answer

Encrypting data

Answer

Storing records

Question 26

26. Which function returns the number of rows in a table?

Question 27

27. What is data integrity in databases?

Answer

Sorting tables

Answer

Combining data

Answer

Encrypting the data

Answer

Ensuring data remains accurate and consistent

Question 28

28. What is a primary key?

Answer

A field that uniquely identifies a record

Answer

A field that allows null values

Answer

A duplicated field

Answer

A field used only for sorting

Question 29

29. Which is the correct order of SQL execution?

Answer

FROM → SELECT → WHERE

Answer

FROM → WHERE → SELECT

Answer

SELECT → FROM → WHERE

Answer

SELECT → WHERE → FROM

Question 30

30. Which keyword is used to define a new table in SQL?

Answer

BUILD TABLE

Answer

MAKE TABLE

Answer

CREATE TABLE

Question 31

31. Which command is used to remove records from a table?

Question 32

32. Which SQL clause is used to rename a column or table?

Question 33

33. What is the default sort order in SQL?

Answer

Alphabetical

Answer

Descending

Question 34

34. What is an attribute in a database?

Answer

A unique row

Answer

A data field or column

Answer

A duplicate record

Answer

A set of tables

Question 35

35. Which clause is used with GROUP BY to filter groups?

Question 36

36. What does NULL represent in a database?

Answer

A false value

Answer

A missing or unknown value

Answer

An empty space

Answer

A zero value

Question 37

37. Which command is used to retrieve data from a database?

Question 38

38. Which SQL command is used to remove a table completely?

Question 39

39. What is a composite key?

Answer

A key made of multiple columns

Answer

A single key used across tables

Answer

A duplicated primary key

Answer

A foreign key

Question 40

40. Which operator is used in SQL for pattern matching?

Question 41

41. What does DBMS stand for?

Answer

Database Managing Software

Answer

Data Backup Management System

Answer

Database Management System

Answer

Data Business Modeling Software

Question 42

42. What is a field in a database?

Answer

A collection of tables

Answer

A data file

Answer

A single piece of data in a record

Answer

A group of records

Question 43

43. What is data redundancy?

Answer

Repeating the same data unnecessarily

Answer

Encrypting data

Answer

Compressing data

Answer

Losing data

Question 44

44. Which SQL keyword is used to combine results from two queries?

Question 45

45. What is a view in SQL?

Answer

A primary key

Answer

A physical table

Answer

A virtual table created from a SELECT query

Answer

A stored procedure

Question 46

46. Which SQL clause groups rows with the same values?

Question 47

47. Which of the following defines rules for data in a table?

Answer

Constraint

Question 48

48. Which of the following is not a type of DBMS?

Answer

Spreadsheet

Answer

Relational

Answer

Hierarchical

Question 49

49. Which of the following is a popular database management system (DBMS)?

Answer

Microsoft Excel

Answer

Adobe Reader

Question 50

50. What is the purpose of normalization?

Answer

To reduce redundancy and improve data integrity

Answer

To slow down database queries

Answer

To duplicate data

Answer

To convert data to audio format

Question 51

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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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