OBJECT ORIENTED DATABASE QUIZ

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

False

True

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Using OQL, you may do which of the following?

All of these

Return a specific subset of elements using a given criteria.

Return a collection of elements without duplicates.

Return an entire collection of elements including duplicates.

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ODL supports the abstract keyword for classes and operations.

True

False

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The ODMG Object Model supports only unary and binary relationships.

False

True

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Which of the following is true concerning the following statement: class Manager extends Employee

Manager is an abstract class and a superclass.

Manager is a concrete class and a superclass.

Manager is an abstract class and a subclass.

Manager is a concrete class and a subclass.

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

True

False

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Literals do not have identifiers, and, therefore, cannot be individually referenced like objects.

False

True

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

Used to develop logical schemas

A data definition language for OODB

All of these

A method to implement a logical schema

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

True

False

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