DISORDERS IN BIOTECHNOLOGY QUIZ

Using ODL, you can define which of the following?

Structure

Operation

All of these

Attribute

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

False

True

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

True

False

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The keyword "inverse" is used in which of the following?

Class

Relationship

All of these

Attribute

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

False

True

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

To define a range for an attribute.

All of these

To define a range for a class.

To define a range for a relationship.

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ODL supports the abstract keyword for classes and operations.

True

False

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An extent is which of the following?

The set of all instances of a class within a database

Only one instance of a class within a database

A keyword that indicates that the superclass inherits from a subclass

A keyword that indicates that the subclass inherits from a superclass

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