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Difference Between Strong and Weak Entity

AmitDiwan
Updated on 15-Apr-2021 07:40:52

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In this post, we will understand the difference between strong entity and weak entity −Strong EntityIt has primary key.It doesn’t depend on any other entity.It can be represented using a single rectangle.The relationship between two strong entities can be represented using a single diamond.It can either have total participation or no participation.Weak EntityA weak entity has a partial discriminator key.It depends on the strong entity.It can be represented using a double rectangle.The relationship between a strong and a weak entity can be represented using a double diamond.They always have total participation.Read More

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