Az Erdе‘rе‘l -

: They serve as high-level documentation of a system’s information architecture. Levels of Abstraction

: They act as a blueprint for developers to build the actual physical database. AZ erdЕ‘rЕ‘l

: They provide a common visual language for stakeholders, business analysts, and engineers to discuss data requirements. : They serve as high-level documentation of a

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