Object Oriented Database - MCQ Questions and answers- Technical Aptitude

1

ODL supports which of the following types of association relationships?

A) Unary B) Unary and Binary C) Unary and Binary and Ternary D) Unary and Binary and Ternary and higher

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Answer & Solution

Answer: Option B

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2

An extent is which of the following?

A) A keyword that indicates that the subclass inherits from a superclass B) A keyword that indicates that the superclass inherits from a subclass C) The set of all instances of a class within a database D) Only one instance of a class within a database

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Answer & Solution

Answer: Option C

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3

Identify the class name for the following code: ABC123 course();

A) ABC123 B) course C) course() D) All of the above

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Answer & Solution

Answer: Option A

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4

Using ODL, you can define which of the following?

A) Attribute B) Structure C) Operation D) All of the above

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Answer & Solution

Answer: Option D

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5

The keyword "inverse" is used in which of the following?

A) Class B) Attribute C) Relationship D) All of the above

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Answer & Solution

Answer: Option C

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6

The object definition language (ODL) is which of the following?

A) Used to develop logical schemas B) A data definition language for OODB C) A method to implement a logical schema D) All of the above.

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Answer & Solution

Answer: Option D

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7

An atomic literal is which of the following?

A) Strings B) Boolean C) Long D) All of the above.

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Answer & Solution

Answer: Option D

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8

Which of the following is true concerning an ODBMS?

A) They have the ability to store complex data types on the Web. B) They are overtaking RDBMS for all applications. C) They are most useful for traditional, two-dimensional database table applications. D) All of the above.

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Answer & Solution

Answer: Option A

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9

The reserved word enum is used for which of the following?

A) To define a range for an attribute. B) To define a range for a class. C) To define a range for a relationship. D) All of the above.

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Answer & Solution

Answer: Option A

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10

Which of the following is an unordered collection of elements that may contain duplicates?

A) Set B) Bag C) List D) Dictionary

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Answer & Solution

Answer: Option B

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