Following is an ER diagram for a customer relation management system (CRM). It illustrates the various entities involved inside the system and how these entities interact and manage the CRM. In this, the various entities involved include the CRM, the admin who manages the CRM, the employee who manages the customer, the customer who takes services or makes an order, and the product that contains the description of the product. This diagram can prove helpful when understanding the implementation of a CRM inside your organization and can also prove helpful during an expansion program
