Entity-Relationship (ER) Diagram is a diagram that displays the relationship of entity sets stored in a database. As shown in the blended model ER Diagram, the entity-relationship diagrams help to explain the logical structure of databases. The attached diagram is created using EdrawMax and it contains different symbols that use rectangles to represent entities, ovals to define attributes, and diamond shapes to represent relationships. As represented in the diagram, a blended model ER diagram is a blended learning approach to education that combines online educational materials and opportunities for interaction online with traditional place-based classroom methods. A blended model requires the physical presence of both student and teacher.
