OBJECT ORIENTED DATABASE QUIZ

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

True

False

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

Used to develop logical schemas

A method to implement a logical schema

A data definition language for OODB

All of these

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ODL supports the abstract keyword for classes and operations.

False

True

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The Object Query Language is which of the following?

Similar to SQL and uses a select-where structure

Not similar to SQL

Similar to SQL and uses a from-where structure

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

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If you know all the possible values that an attribute can have, you can enumerate those values in ODL.

False

True

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An attribute's value is always literal.

True

False

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Database objects are almost always transient.

True

False

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A relationship should be specified how in the ODL?

Neither direction

One direction starting with the first class

Both directions

One direction starting with the second class

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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();

All of these

ABC123

course

course()

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