Modeling Data in the Organization - Database MCQ Questions and answers- Technical Aptitude

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21.
A relationship is an association representing the interaction between attributes.

A. True

B. False

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22.
A binary relationship is a relationship between two or more entities.

A. True

B. False

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23.
Some business rules cannot be represented in common data modeling notation.

A. True

B. False

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24.
A time stamp is a time value that is associated with a data value.

A. True

B. False

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25.
A logical representation of the data for an organization or for a business area is known as an entity-relationship model.

A. True

B. False

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26.
A derived attribute is an attribute whose values can be calculated from a related relationship.

A. True

B. False

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27.
A fact is a word or phrase that has a specific meaning for the business.

A. True

B. False

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28.
A strong entity is an entity whose existence depends on some other entity type.

A. True

B. False

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29.
Multiple and binary relationships are the same thing.

A. True

B. False

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30.
No two attributes of the same entity type should have the same name.

A. True

B. False

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