OBJECT ORIENTED DATABASE QUIZ

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

To define a range for a class.

All of these

To define a range for an attribute.

To define a range for a relationship.

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In ODL, you specify an operation using parentheses after its name.

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

ABC123

All of these

course

course()

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Database objects are almost always transient.

False

True

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The ODMG Object Model supports only unary and binary relationships.

False

True

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

True

False

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The Object Query Language is which of the following?

Similar to SQL and uses a from-where structure

Not similar to SQL

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

Similar to SQL and uses a select-where structure

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An atomic literal is which of the following?

Strings

All of these

Boolean

Long

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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 an abstract class and a subclass.

Manager is a concrete class and a subclass.

Manager is a concrete class and a superclass.

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