OBJECT ORIENTED DATABASE QUIZ

The Object Query Language is which of the following?

Not similar to SQL

Similar to SQL and uses a select-from-where structure

Similar to SQL and uses a select-where structure

Similar to SQL and uses a from-where structure

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

All of these

A method to implement a logical schema

Used to develop logical schemas

A data definition language for OODB

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A relationship should be specified how in the ODL?

Both directions

Neither direction

One direction starting with the second class

One direction starting with the first class

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

Set

Dictionary

List

Bag

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

ABC123

course

course()

All of these

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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?

To define a range for a class.

To define a range for an attribute.

All of these

To define a range for a relationship.

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Before specifying a key for a class, you must specify its extent.

True

False

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

Set

List

Bag

Dictionary

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The ODMG Object Model supports only unary and binary relationships.

True

False

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