OBJECT ORIENTED DATABASE QUIZ

Specifying a key ensures that no two objects belonging to a class have the same value for the key attribute(s).

True

False

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The ODMG Object Model requires that a relationship be specified in both directions.

False

True

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A relationship should be specified how in the ODL?

One direction starting with the second class

Both directions

One direction starting with the first class

Neither direction

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An attribute's value is always literal.

False

True

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

All of these

To define a range for a relationship.

To define a range for a class.

To define a range for an attribute.

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

Dictionary

Bag

List

Set

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Which of the following is an ordered collection of elements of the same type?

List

Dictionary

Set

Bag

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

A data definition language for OODB

A method to implement a logical schema

Used to develop logical schemas

All of these

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The Object Model supports different literal types, but does not support atomic literals, collection literals, and structured literals.

True

False

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A collection of literals or object types is called a bag.

False

True

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