I was looking at the SalesForce data model. The image can be seen here below:
Does anyone know what tool that was used to make this?
This image was copied from http://www.salesforce.com/us/developer/docs/api/Content/sforce_api_erd_majors.htm
More images can be found here: http://www.salesforce.com/us/developer/docs/api/Content/data_model.htm
https://www.lucidchart.com/pages/er-diagram-tool
I think it might be this one?