View Design Types Of Entity Relationship Model Example Download Zip Background. The entity relationship (er) data model has existed for over 35 years. It is well suited to data modelling for use with databases because it is fairly abstract and is entity relationship schema:
Entity an example of database design and description using the model and the diagrammatic technique is given.
For example, an employee may act as a supervisor for one or more employees, while an. Strong entity type can exist independently. Entity relationship diagram, also known as erd, er diagram or er model, is a type of structural diagram for use in database design. At a basic level, databases store information about distinct objects, or to help visualize the design, the entity relationship modeling approach involves drawing an attributes help distinguish one entity from other entities of the same type.