Entity Relationship Modeling Mcqs

Our collections of Multiple choice questions and answers focuses on study of ” DB Entity Relationship Modeling “. These questions are chosen from a collection of most authoritative and best reference books on DBMS.Our aim is to prepare an individual for competitive exams like NTS | GAT | ECAT | Data Warehouse jobs | Data Mining | DB administration jobs | Nadra Jobs | Software House and Data Base and Web Developer jobs | University and College entrance exams and various tests and job interviews. One should practice our Mcqs to assimilate DB Entity Relationship Modeling comprehensively.

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1.
In modeling of union type classes, partial category of super class is represented by

Single line

Inverted comma

Triple line

Double line

2.
Type of classes which specifies operations and attributes but corresponding classes are not available are classified as

Abstract classes

Leaf node classes

Overlapping node classes

Shared node classes

3.
Entity type from which subgroups can be made is classified as

Super class

Subclass

Qualified class

Non-qualified class

4.
Considering conceptual synthesis and refinement, generalization process is classified as

Conceptual instantiation

Conceptual synthesis

Conceptual refinement

Conceptual identification

5.
Kind of class which does not have its own subclasses is called

Leaf node

Attribute node

Overlapping node

Disjoint node

6.
Root super class in diagrams of generalization and specialization is considered as

Three-tier class

Two-tier class

Base class

Top class

7.
Association between aggregate and primitive objects is classified as

IS-A-SUPERCLASS-OF relationship

IS-A-SUBCLASS-OF relationship

IS-A-COMPONENT-OF relationship

IS-A-PART-OF relationship

8.
Concept which describes domain of knowledge is considered as

Morphology

Ontology

Anthropology

Terminology

9.
Considering abstraction concepts, process of assigning similar entities to similar entity types systematically is called

Classification

Instantiation

Identification

Exception abstract

10.
Category which considers subset of union of entities included in super class is classified

Disjoint super class

Joined super class

Total super class

Partial super class

11.
Kind of class whose entities belongs to some other data class is called

Concrete classes

Abstract classes

Leaf node classes

Template classes

12.
According to enhanced-entity relationships, association between super class and subclass is as

Super class is subset of subclass

Subclass is subset of super class

Subclass is partial joint of super class

Super class is partial joint of subclass

13.
Possible specialization constraint includes

Disjoint and total

Overlapping and total

Overlapping and partial

All of above

14.
Hierarchy in which each subclass participates in one subclass relationship is classified as

Specialization hierarchy

Generalization hierarchy

Jointness hierarchy

Disjoint hierarchy

15.
Type of lattice in which a subclass can be class or subclass in more than one association of subclasses is classified as

Attribution lattice

Specialization lattice

Generalization lattice

Disjoint lattice

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