ERD (Entity-Relationship Diagram)

An Entity-Relationship Diagram (ERD) is a visual representation that illustrates how different entities, such as people, objects, or concepts, interact within a system. In an ERD, entities are depicted as rectangles, and the relationships between them are shown as lines connecting these rectangles. This diagram helps to organize data and clarify its structure, making it easier to understand the connections and dependencies among various elements. ERDs are commonly used in database design to ensure that all necessary data relationships are identified and properly structured.