Computer Sciences MCQs Chapter 2 Class 12

NUST Entry test NET 2023 contains most of the Computer Sciences MCQs. FSC ICS Part 2 Computer book MCQs. HSSC Computer Sciences CS questions MCQs. Solved Chapterwise Computer Sciences MCQs for first-year 12 class MCQs. Second-year and first-year Computer Sciences textbooks chapter-wise MCQs with the answer are provided here. PakLearningSpot PLS MCQs Bank website for FREE Entry test preparations

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Created on February 22, 2023 By Ali Durrani

Computer Sciences Ch 2 Class 12

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1 / 20

9. The rows of a table or relation are known as:

Tuples

Occurrences

Both (a) and (b)

None

2 / 20

20. is responsible for designing, coordinating and monitoring the database system: (

Data Administrator

End-user

Database Administrator

Database manager

3 / 20

8. The columns of a relation correspond to:

Table

Cell

Fields

Records

4 / 20

is used to identify records of a relation uniquely:

Foreign key

Secondary key

Sort key

Primary key

5 / 20

1. Insert command is used to insert.

a new table

a new record

a view

dependencies

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13. A table must have:

Primary key

Secondary key

Composite key

Sort key

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15. An attribute is also known as:

Relation

Field

row

tuple

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18. Which of the following is responsible for designing the database system.

Data Administrator

End User

Database Administrator

Database Manager

9 / 20

A table is also known as: (

Two-dimensional array

Relation

Both (a) and (b)

None

10 / 20

19. serves as a bridge between end users and database administrator:

Data Administrator

System Analyst

Application Programmer

None

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10. The column of relation is known as

Attribute

al Tuplei

Relation

Record

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7. A tuple in a table is also known as

Occurrence

Attribute

Relation

Record

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14. A key that consists of two or more than two attributes of a table is called

Composite Key

Foreign Key

Primary Key

Sort Key

14 / 20

represents an entity

(a) Car

Student

House

All of these

15 / 20

2. The foreign key is found in

parent table

dependant table

pivot table

index table

16 / 20

11. is used to create data view

Database Manager

Report Generator

SQL

utilities

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3. Anything in the real world that has a set of different attributes or properties is called:

Database

Data set

Entity

Data

18 / 20

17. SQL is used for

Data manipulation

Data definition

Data Deletion

All of the above

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6. A table is also known as

Multiple arrays

Relation

A file

None of these

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16. is known as control key:

Sort key

Candidate key

Composite key

Primary key

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