OBJECT ORIENTED DATABASE QUIZ

Which of the following is an unordered collection of elements that may contain duplicates?

Dictionary

List

Set

Bag

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

A data definition language for OODB

Used to develop logical schemas

All of these

A method to implement a logical schema

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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 select-from-where structure

Similar to SQL and uses a from-where structure

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ODL supports which of the following types of association relationships?

Unary and Binary and Ternary

Unary

Unary and Binary

Unary and Binary and Ternary and higher

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A relationship should be specified how in the ODL?

One direction starting with the second class

One direction starting with the first class

Both directions

Neither direction

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

Relationship

Class

Attribute

All of these

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The ODMG Object Model supports only unary and binary relationships.

False

True

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

False

True

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An attribute's value is always literal.

False

True

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