View Design Key Attributes In Er Diagram Example Download Zip Background. Class address city state zip. Multi valued attributes are represented with double outlined ovals in er diagrams.
Derived attribute − derived attributes are the attributes that do not.
• it is represented in er diagram by using the following shape which is connected to participating entities. Entity student employee course section bank branch employee project. Primary keys are an attribute or combination of attributes that uniquely identifies one and only one instance of an entity. Er diagram for library management system to design a library management system.