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Entity Relationship Model MCQs | Database Management System Objective Questions and Answers

11 Relations produced from an E-R model will always be in :
A First normal form
B Second normal form
C Third normal form
D Fourth normal form

Answer: Option [C]
12 An association of several entities in an Entity-Relation model is called :
A Tuple
B Record
C Relationship
D Field

Answer: Option [C]
13 The attributes made up of more than one single attributes are called :
A Derived attribute
B Composite attribute
C Single value attribute
D Multi value attribute

Answer: Option [B]
14 Which of the following keys uniquely identifies the entity set ?
A Primary key
B Super key
C Candidate key
D None of these

Answer: Option [A]
15 In ER model the details of the entities are hidden from the user. This process is called :
A generalization
B specialization
C abstraction
D none of these above

Answer: Option [C]

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