ER Model (Entity-Relationship Model)

The Entity-Relationship (ER) Model is a way to visually represent how different types of data relate to each other within a system. It uses diagrammatic symbols to define "entities" (things like people, places, or objects) and the "relationships" between them (how entities connect or interact). This model helps in designing databases by describing what data is stored and how different data elements are associated, making it easier to organize, understand, and manage complex information systems efficiently.