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DBMS-Unit2-Quiz

Authored by Gayathri S

Computers

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DBMS-Unit2-Quiz
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30 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Entity is a _________

Object of relation

Present working model

Thing in real world

Model of relation

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The descriptive property possessed by each entity set is _________

Entity

Attribute

Relation

Model

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The attribute name could be structured as an attribute consisting of first name, middle initial, and last name. This type of attribute is called

Simple attribute

Composite attribute

Multivalued attribute

Derived attribute

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The set of permitted values for each attribute is known as_____

Domain

Set values

Attributes

Action Set

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an ER model , an association among several entities is known as________

Relationship

Connection

Participation

Synchronization

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

_____________ express the number of entities to which another entity can be associated via a relationship set.

Mapping Cardinality

Relational Cardinality

Participation Constraints

None of the mentioned

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

We wish to ensure that a value that appears in one relation for a given set of attributes also appears for a certain set of attributes in another relation. This is called a _________

Set Integrity

Referential Integrity

Join Integrity

All the above

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