Enhanced Entity Relationship Model In Dbms

Enhanced entity relationship diagram smm medyan Er entity relationship diagram in dbms board infinity. Entity relationship diagram erd explained er model in dbms 2022 2 entity relationship model in dbms.

These are fundamental to conceptual modeling The additional EER concepts are used to model applications more completely and more accurately EER includes some object oriented concepts such as inheritance Subclasses and Superclasses 1 An entity type may have additional meaningful subgroupings of its entities Entity relationship model in dbms ermodelexample. Entity types in dbms ermodelexampleIntroduction to enhanced entity relationship eer model edrawmax.

Enhanced entity relationship diagram smm medyan

Enhanced Entity Relationship Diagram SMM Medyan

EER model includes all modeling concepts of the ER model In addition EER includes Subclasses and superclasses Specialization and generalization Category or union type Attribute and relationship inheritance Subclasses Superclasses and Inheritance cont d Enhanced ER or EER diagrams Entity-Relationship model. You have relationships (image source) and attributes (image source) that can also be primary keys (image source) Enhanced entity-relationship model. You have the same as with the ER model plus. specialisation. partitioning (which are multiple specialisations) generalisation. aggregation. keys are annotated differently:

What is entity relationship model in dbms er diagram use my notes

What Is Entity Relationship Model In DBMS ER Diagram Use My Notes

Enhanced Entity Relationship Model In DbmsThe enhanced entity-relationship ( EER) model (or extended entity-relationship model) in computer science is a high-level or conceptual data model incorporating extensions to the original entity-relationship (ER) model, used in the design of databases . EER is a high level data model that incorporates the extensions to the original ER model It is a diagrammatic technique for displaying the following concepts Sub Class and Super Class Specialization and Generalization Union or Category