Entity Type

Entity Type

A group of objects with the same properties, which are identified by the enterprise as having an independent existence
not a formal definition
Different designers may identify different entities

Can have physical existence or conceptual existence
 Students , lecturers, 
 course, subjects 

An entity is an object in the real world

A collection of similar entities is called an entity set.

Graphically,
Rectangle 



A rectangle labelled with the name of the entity

First letter of entity name is uppercase
E.g., Student

Normally an entity type is named using a ‘noun’ or ‘noun phrase’