Entity Relationship Diagram Uml. An entity in this context is an object a component of data. An entity relationship diagram erd is a representation of data within a domain.
An entity set is a collection of similar entities. An entity relationship diagram erd shows the relationships of entity sets stored in a database. Select a data model where a new entity to be contained.
Otherwise the syntax for drawing diagrams is the same as for class diagrams.
Select entity in toolbox. To create a entity model element only by menu. Select model add entity in menu bar or add entity in context menu. Select entity in toolbox.
