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Object Oriented Data Modeling MCQ Questions and answers | Database | Technical Aptitude

Object Oriented Data Modeling (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-3 section-1

21
A derived element is typically shown by placing either a slash (/) or a stereotype of <> before the name of the element.
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Answer: Option A
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22
Composition does not allow an object to be part of more than one aggregate object.
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Answer: Option A
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23
In an object diagram, an object is represented as a rectangle with two compartments.
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Answer: Option A
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24
An operation that alters the state of an object is known as a constructor operation.
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Answer: Option B
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25
Each association has two or more roles.
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Answer: Option A
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26
An aggregation is a stronger form of association relationship and is represented with a solid diamond at the aggregate end.
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Answer: Option B
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27
The UML notation is useful for graphically depicting an object-oriented analysis or design model.
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Answer: Option A
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28
Multiple inheritance allows a class to inherit features from more than one superclass.
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Answer: Option A
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29
The reasons for overriding include extension, restriction, and optimization.
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Answer: Option A
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30
An object's state is determined by its attribute values and links to other objects.
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Answer: Option A
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