MODELING DATA IN THE ORGANIZATION QUIZ

When the minimum and maximum number of instances of an entity is one, you know which of the following?

Mandatory many

Mandatory one

Cannot tell

Optional one

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A binary relationship is which of the following?

A relationship between two entities

A relationship between two attributes

An entity with two different relationships

An attribute with two different relationships

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An attribute is a person, place, object, event in a user environment.

False

True

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An attribute name should be which of the following?

Singular verb or verb phrase

Follow a standard format

Use a alias

All of these

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An entity name should be which of the following?

Specific to the organization

Concise

All of these

A singular noun

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A relationship is which of the following?

Weak entity

Link between entities

A person, place, or thing

Property or characteristic of an entity

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Multiple and binary relationships are the same thing.

False

True

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A rectangle represents which of the following in an ERD?

Attribute

Relationship

Entity

Optional One

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Relationships cannot have attributes.

False

True

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A composite attribute is which of the following?

Multiple attributes

An attribute that can be broken into components

An identifier

An attribute that cannot be broken into components

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