Az Erdе‘rе‘l -

: Represented as diamonds or connecting lines, these show how entities interact (e.g., a Customer "places" an Order ).

: Defines the numerical relationship between entities, such as one-to-one , one-to-many , or many-to-many . Why ERDs are Useful AZ erdЕ‘rЕ‘l

: A high-level view showing major entities and their relationships without technical details. : Represented as diamonds or connecting lines, these