Project Workflow Entity-Relationship (ER) diagram shows the flow of the work done during any project. It should be noted here that entities are the fundamental units utilized in modeling classes of concrete or conceptual objects. ERM is a graphical approach to database design. It can be designed or created using EdrawMax or EdrawMax Online. It has several predefined templates that make designing such ERM diagrams very easy. 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 a component. A relationship between two properties demonstrates that the estimations of the related characteristics are associated.