Database Management System MCQs – Practice Test 6 (Chapter 6)

Entity Relationship Modeling MCQ with Answers PDF Download – Test 6

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Entity Relationship Modeling MCQ – Practice Test 6 PDF Download

MCQ: 26

The entity types, super classes and subclasses are classified as

ER schema overlapping
ER schema functions
ER schema objects
EER schema constructs

MCQ: 27

The subclass which has more than one super class is called

partial subclass
shared subclass
shared super class
joint super class

MCQ: 28

The type of subclass constraint that one entity can be member of at most one subclass is classified as

incomplete joint constraint
complete joint constraint
disjointness constraint
jointness constraint

MCQ: 29

In UML class diagrams, the inheritances that are permitted includes

single inheritance
multiple inheritance
shared schema inheritance
both a and b

MCQ: 30

The leaf nodes in diagrams of generalization and specialization are considered as

extension classes
leaf classes
inverted classes
diverted classes

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