ER Model

ER Model: The Entity-Relationship Model (or E-R Model) is a popular high conceptual data model. Peter Chen introduced this model in 1976 and is widely used for local design. The E-R model is used to construct the conceptual data model, which is the representation of the structure of the database that is independent of the DBMS software. The entity relationship model is mostly commonly used during the analysis phase of the database. The entity relationship model is expressed in terms of entities, relationships between the entities and the attribute or the properties of the involved entities. The entity relationship model also allows the logical designer to specify constraints on the entities or relationships between entities.

Entity Relationship Model

Entity Relationship Model Entity Relationship Model: The Entity-Relationship Model (or E-R Model) is a popular high conceptual data model. Peter Chen introduced this model in 1976 and is widely used…

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