ER Diagram

An Entity-Relationship (ER) Diagram is a visual representation used to illustrate how different entities (like people, places, or things) in a system are related to one another. It uses shapes like rectangles for entities, diamonds for relationships, and lines to connect them. For example, in a school system, "Students" and "Courses" are entities, and the relationship might be "Enrolls in." ER Diagrams help in designing databases by clarifying how data interacts and ensuring that all necessary connections are captured effectively. This makes it easier to organize and manage information systematically.