An Entity-Relationship (ER) Diagram is a flowchart that illustrates how "entities" such as people, objects, or concepts relate to each other within a system. The following Food Helpers NGO ER diagram shows how such diagramming tools are often used in conjunction with other important diagram types. If you study this concept in detail, you will find that in an ER modeling, the database structure is portrayed as a diagram that allows you to distinguish between entities, attributes, and the relationship between these entities with one another. As shown in the food helpers NGO diagram, the main aspect or idea is about Food Helpers, which has several attributes, like Name, Email, Password, and others. As shown here, a Food Helper can supply food to Food Suppliers. These Food Suppliers have different attributes, like Name, Address, Phone Number, etc.