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DBMS Unit-1

Authored by Dr. Manish Sharma

Computers

University

Used 2+ times

DBMS Unit-1
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52 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

[Remember] Which symbol is used to represent an entity in an ER diagram?

A. Circle
B. Diamond
C. Rectangle
D. Square

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

[Remember] What does a line connecting two entities in an ER diagram represent?

A. An attribute
B. A relationship
C. An identifier
D. A subtype

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

[Remember] What is the purpose of an ER diagram?

A. To display data
B. To create database tables
C. To design a database schema
D. To insert data

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

[Remember] Which symbol is used to represent a relationship in an ER diagram?

A. Circle
B. Diamond
C. Rectangle
D. Square

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

[Remember] What does a double diamond symbol in an ER diagram represent?

A. A multivalued attribute
B. A weak entity
C. A subtype
D. A derived attribute

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

[Remember] What is an entity in an ER diagram?

A. A table in a database
B. A field in a table
C. A diagram of a database
D. A visual representation of a database

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An entity set that does not have sufficient attributes to form a primary key is termed a ________

Strong entity set

Variant set

Weak entity set

Variable set

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