Extended ER Model As we know, the ER Model is used for database modeling (designing).
Participation Constraints Participation constraint defines how many instances of an entity set can participate with
Cardinality and Modality Cardinality and modality are two different terms in the Database. Let’s see
Relationships in ER Model In the ER Model, a Relationship is a relation between entities.
Attributes in the ER Model Attributes are the properties of the entity in an entity
Entity in ER Model The entity is any physical object, which may be a human,
ER Model And Its Symbols ER (Entity Relationship) diagram is a graphical representation of the
