In a real database, such as one powering an online store, you can imagine that products would have many attributes. Let’s give our product the attributes name and weight. For instance, here’s a very simple entity in the Gleek app.Īttributes are the characteristics of entities. Entities are the real-world objects or concepts that are relevant to the database. EER diagrams give developers the tools to add detail and better understand how their database should be designed.ĮR diagrams use three basic elements to represent databases: entities, attributes, and relationships. As their name suggests, enhanced entity-relationship diagrams take ER diagrams a step further and allow for much more complex designs for modern databases. Developers use entity-relationship diagrams to sketch out designs for databases.
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