Following is an ER diagram for an online shopping system. The diagram visualizes the various entities involved and the relation among the entities. It also illustrates the characteristics of each entity present in the system.Here an entity is represented using a large square box with the entity name listed on top. The attributes associated with each entity are written with the entity. The relation among the entity is represented using an arrowed line, with a degree of relation written above the line. Through this er diagram, one can get a clear understanding of the online shopping system architecture.
