Eer Diagram. It reflects the data properties and constraints more precisely. Entity type y is a subtype subclass of an entity type x if and only if every y is necessarily an x.
It is based on the entity relationship model. With their enhanced features you can plan databases more thoroughly by delving into the properties and constraints with more precision. Entity type y is a subtype subclass of an entity type x if and only if every y is necessarily an x.
Eer diagrams are created by double clicking the add diagram icon in the model editor.
Eer models are helpful tools for designing databases with high level models. Enhanced entity relationship eer diagrams are basically an expanded upon version of er diagrams. Eer diagram is a visual representation of data based on eer model that is an extension of the original entity relationship er model. It is based on the entity relationship model.
