Abstract The Entity-Relationship ( ER ) model and its accompanying ER diagrams are widely used for database design and Systems Analysis. Many books and articles just provide a definition of each modeling component and give examples of pre-built ER diagrams. Beginners in data modeling have a great deal of difficulty learning how to approach a given problem, what questions to ask in order to build a model , what rules to use while constructing an ER diagram, and why one diagram is better than ... Shop thousands of high-quality on-demand online courses. 30-day satisfaction guarantee. Learn online at your own pace. Start today with a special offer. What is the Entity-Relationship Model in DBMS ? A high-level data model diagram is the entity-relationship model or ER Model . We depict the real-world problem in visual form in this model to make it easier for stakeholders to comprehend. The developers can also quickly grasp the system by simply looking at the ER Diagram. ER model stands for an Entity-Relationship model . It is a high-level data model . The Entity Relationship model was proposed by Peter Chen in 1976. ER model is a logical representation of an enterprise data. ER model is a diagrammatic representation of logical structure of database . E-R model describes relationship among entities and attributes.
