With the increased popularity of UML, most business analysts tend to use a Class Diagram to model business entities and their relationships.  The entity relationship diagram is a tool used by the Data Analysts/Modelers to model the physical structure of a relational database.

Having said that, I'm sure there are many business analysts and systems analysts who create E-R diagrams.

- Adrian

Hi

Does anyone know a good website where i can refer for drawing a Class diagram.

Thanks

sonavi