Az Erdе‘rе‘l 📌

: Adds more detail, defining attributes and keys but remaining independent of a specific database technology.

: A high-level view showing major entities and their relationships without technical details. AZ erdЕ‘rЕ‘l

: Represented as ovals, these describe the specific characteristics of an entity (e.g., a Customer entity might have attributes like Name or Email ). : Adds more detail, defining attributes and keys

: The most detailed version, showing actual table structures, data types, and constraints for a specific database management system. : Adds more detail

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