What a good pic. It helped me a lot.
CRM and SCM are outside of the ERP, that connect the ERP with customers or suppliers. And the ERP regards to the core business functions of a company, with Financial Management, Human Resource Management, Marketing & Sales, Operations Management, etc in it.
I think we've already learned these different fields of management. HRM, SCM, Marketing, OM, FM... I should have combined them together.