What is weak and strong Entity set?



Suraj Said

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Entity set in a database refers to a collection of entities that have the same attributes and characteristics.
A strong entity set is an entity set that has a primary key, a unique identifier that distinguishes one instance of the entity from others.
A weak entity set, on the other hand, does not have a primary key of its own and relies on another entity to establish its identity. It is represented by a dotted oval in an ER diagram and is identified by a partial key.



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