Entity Relationship Model Flashcards by Sean Ampomah

Q

What is an Entity?

A

A thing in the real world, can be a concept

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Q

Attributes

A

Properties that descirbe entities

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Q

Composite Attributes

A

Can be divided into further parts

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Q

Simple Attribute

A

Can not be divided further

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Q

Single Valued attributes

A

1 value for a particular entity

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Q

Multivalued entity

A

Can have a set of values for a particular entity

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Q

Derived Attributes

A

Can be derived from other attributes

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Q

Automic Data

A

Data that is unique

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