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Data Modeling with ER Model - Database MCQ Questions and answers- Technical Aptitude

Data Modeling with ER Model(Database) mcq questions and answers with easy and logical explanations for various competitive examination, interview and entrance test. Database Mcq question are important for technical exam and interview. Page-4 section-1

31
An entity is something that can be identified in the user's work environment; something that the users want to track.
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Answer: Option A
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32
Entity instances are associated by relationship classes.
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Answer: Option B
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33
1:1, 1:N and N:M relationships are also known as HAS-A relationships.
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Answer: Option A
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34
In a 1:N relationship, the parent is the entity on the one side of the relationship and the child is the entity on the N side of the relationship.
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Answer: Option A
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35
A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.
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Answer: Option A
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36
An entity class is a collection of entities and is described by the structure of the entities in that class.
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Answer: Option A
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37
Relationship classes are associations between entity classes.
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Answer: Option A
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38
An identifier typically uses more than one attribute.
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Answer: Option B
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39
An identifier determines the type of relationship that an entity has.
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Answer: Option B
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40
A recursive relationship is a relationship between an archetype and an instance of that archetype.
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Answer: Option B
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