What is Strong Entity?
A strong entity is not dependent on any other entity in the schema. A strong entity will always have a primary key. Strong entities are represented by a single rectangle. The relationship of two strong entities is represented by a single diamond. Various strong entities, when combined together, create a strong entity set.
Difference between Strong and Weak Entity
Prerequisite – ER Model
An entity is a “thing” or “object” in the real world. An entity contains attributes, which describe that entity. So anything about which we store information is called an entity. Entities are recorded in the database and must be distinguishable, i.e., easily recognized from the group. In this article we will see difference between strong and weak entity.
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