Download Design Recursive Relationship Er Diagram Example Download Zip Images. Er diagram stands for entity relationship diagram, also known as erd is a diagram that displays the relationship of entity sets stored in a database. An entity relationship diagram (erd) is a visual representation of different entities within a system and how they relate in the below example an employee can be a supervisor and be supervised, so there is a recursive relationship.
A entity relationship diagram showing er diagram for sales & marketing.
The same entity participates more than once in the relationship. N subordinate_to 7 attributes attributes represent elementary properties of the. Entities are the things we need to store data about. An er model is a design or blueprint of a database that can later be implemented as a database.