Difference Between Strong and Weak Entity

BusinessCompanies/OrganisationsEntity Farmework

In this post, we will understand the difference between strong entity and weak entity −

Strong Entity

  • It 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 Entity

  • A 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.

raja
Published on 15-Apr-2021 07:38:26
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