Entity-Relationship Model (ER Model)

The Entity-Relationship (ER) Model is a way to visually represent how different pieces of information, called entities, relate to each other within a system. Think of entities as objects or concepts (like customers or products), and relationships as the connections between them (such as a customer placing an order). The ER Model uses diagrams with symbols to show these entities and their relationships, helping design and organize databases efficiently. It provides a clear blueprint for understanding the structure of data and how different data points are linked.