Computer-Database Concepts [NCO- Cyber Olympiad (SOF) Class 12]: Questions 1 - 7 of 29

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Question 1

Database Concepts

Question

MCQ▾

In Relational Database, ________ is known as a set of values of the same type for the given attribute.

Choices

Choice (4)Response

a.

Structure

b.

Degree of Relations

c.

Domain

d.

Cardinality

Question 2

Database Concepts

Question

MCQ▾

________ Is an Instance of Computer Programs, which will be Executed Sequentially by a Computer System.

Choices

Choice (4)Response

a.

Computer Process

b.

Thread

c.

Active Process

d.

None of the above

Question 3

Database Concepts

Question

MCQ▾

Which of the following is NOT types of Join in DBMS?

Choices

Choice (4)Response

a.

Equi Join

b.

Cross Join

c.

Index Join

d.

Inner Join

Question 4

Database Concepts

Question

MCQ▾

The most common letters are in the center row of keys, so less hand movement is needed when a person is typing in ________.

Choices

Choice (4)Response

a.

DVORK

b.

ACMCHI

c.

KALQ

d.

QWERTY

Question 5

Database Concepts

Question

MCQ▾

________ Key Constraint Uniquely Identified Each Record in the Database.

Choices

Choice (4)Response

a.

Foreign

b.

Primary

c.

Unique

d.

Both a. and c. are correct

Question 6

Database Concepts

Question

MCQ▾

________ Is a software application that interacts with the user, applications, and the database itself to capture and analyze data.

Choices

Choice (4)Response

a.

DML

b.

DCL

c.

SQL

d.

DBMS

Question 7

Database Concepts

Question

MCQ▾

Updates that Violate ________ are Disallowed.

Choices

Choice (4)Response

a.

Authorization

b.

DDL constraints

c.

Transaction control

d.

Integrity constraints

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