Chen notation (Peter Chen)

Chen notation, developed by Peter Chen, is a visual method used in database design to represent how data entities relate to each other. It uses rectangles to symbolize entities (like people or products), diamonds to depict relationships (how entities are connected), and lines to link them, often with labels indicating the type of relationship. This systematic diagram helps developers and data managers clearly understand the structure of a database, its key components, and how they interrelate, facilitating efficient database creation and management.