Dependent Entity

Weak Entity

n.

Pronunciation

/dɪˈpɛndənt ˈɛntəti/

Definition

Data points or entities that may only exist or have certain values if a certain requirement is met by another entity.

In a many to many relationship, dependent entities are created to simplify data models. For example, many buildings may have many rooms, but each room can only be in one building. A data modelist would have to create several unique IDs in this instance. To simply, we can turn the room into a dependent entity to avoid the problem. Dependent entities are a powerful tool in organizing data and simplifying relationships.

Category

Data Modeling

Related Terms

Data Modeling, Entity, Relationship, Unique Identifier

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