HP Computer Practice Set 142 | Interactive MCQ Mock Test

1. Which key can be a combination of multiple columns to ensure uniqueness?

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A. Unique key B. Super key C. Foreign key D. Composite key

2. Which key can be a combination of multiple columns to ensure uniqueness?

Computer 📄 JOA IT (2026)

A. Unique key B. Super key C. Foreign key D. Composite key

3. Which key can be a combination of multiple columns to ensure uniqueness?

Computer 📄 JOA IT (2026)

A. Unique key B. Super key C. Foreign key D. Composite key

4. Which key can be a combination of multiple columns to ensure uniqueness?

Computer 📄 JOA IT (2026)

A. Unique key B. Super key C. Foreign key D. Composite key

5. Which key can be a combination of multiple columns to ensure uniqueness?

Computer 📄 JOA IT (2026)

A. Unique key B. Super key C. Foreign key D. Composite key

6. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

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A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

7. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

Computer 📄 JOA IT (2026)

A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

8. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

Computer 📄 JOA IT (2026)

A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

9. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

Computer 📄 JOA IT (2026)

A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

10. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

Computer 📄 JOA IT (2026)

A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

11. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

Computer 📄 JOA IT (2026)

A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

12. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

Computer 📄 JOA IT (2026)

A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

13. Which of the following best explains why organizations use a Database Management System (DBMS) instead of storing data in multiple separate files?

Computer 📄 JOA IT (2026)

A. A DBMS only speeds up the data entry process and does not impact data organization. B. A DBMS centralizes data control, reducing redundancy and improving data consistency. C. A DBMS lowers the hardware requirements for storing business data compared to using files. D. A DBMS makes all stored data visible to everyone in the organization without restrictions.

14. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

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A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

15. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

Computer 📄 JOA IT (2026)

A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

16. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

Computer 📄 JOA IT (2026)

A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

17. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

Computer 📄 JOA IT (2026)

A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

18. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

Computer 📄 JOA IT (2026)

A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

19. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

Computer 📄 JOA IT (2026)

A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

20. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

Computer 📄 JOA IT (2026)

A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

21. A retail chain experiences rapid growth and needs to change its data structure to include new product categories and store locations. Which feature gives a DBMS an advantage over a file system in this scenario?

Computer 📄 JOA IT (2026)

A. A file system creates backup copies when data structure changes. B. A DBMS offers data independence, allowing structural changes without altering application programs. C. A file system increases storage capacity for new products automatically. D. A DBMS provides a graphical interface for managing data locations.

22. Which attribute type is created by combining 'Street', 'City', and 'Zip code' component?

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A. Composite attribute B. Multivalued attribute C. Simple attribute D. Derived attribute

23. Which attribute type is created by combining 'Street', 'City', and 'Zip code' component?

Computer 📄 JOA IT (2026)

A. Composite attribute B. Multivalued attribute C. Simple attribute D. Derived attribute

24. Which attribute type is created by combining 'Street', 'City', and 'Zip code' component?

Computer 📄 JOA IT (2026)

A. Composite attribute B. Multivalued attribute C. Simple attribute D. Derived attribute

25. Which attribute type is created by combining 'Street', 'City', and 'Zip code' component?

Computer 📄 JOA IT (2026)

A. Composite attribute B. Multivalued attribute C. Simple attribute D. Derived attribute

Himachal Pradesh Computer - Practice Mock Test Set 142

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