Creating a software database entity-relationship (ER) diagram is extremely important when working with the software team. It should be noted here that ERM is a graphical approach to database design. It can be designed or created using EdrawMax or EdrawMax Online as it has several predefined templates that make designing such ERM diagrams very easy. The following ER diagram has entities like ARF_Category, ARF_Promogrp, ARF_Promogrp_MBRS, ARF_Promotion, ARF_Line_Item, ARF_Sales_Channel. It is a high-level data model that defines data elements and their relationship for a specified software system. At the same time, an affiliation exists between various qualities of an element. A Relationship between two properties demonstrates that the estimations of the related characteristics are associated.