OBJECT ORIENTED DATABASE QUIZ

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

A method to implement a logical schema

A data definition language for OODB

Used to develop logical schemas

All of these

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An attribute's value is either a literal or an object identifier.

False

True

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A relationship should be specified how in the ODL?

Neither direction

One direction starting with the first class

One direction starting with the second class

Both directions

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An ordered collection of elements of the same type are called sets.

False

True

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An atomic literal is which of the following?

Strings

All of these

Long

Boolean

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You may specify an object identifier with only one unique tag name.

True

False

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

False

True

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Which of the following is true concerning an ODBMS?

All of these

They have the ability to store complex data types on the Web.

They are overtaking RDBMS for all applications.

They are most useful for traditional, two-dimensional database table applications.

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ODL supports the abstract keyword for classes and operations.

True

False

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

List

Bag

Set

Dictionary

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