Az Erdе‘rе‘l [VERIFIED]

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

: They serve as high-level documentation of a system’s information architecture. Levels of Abstraction 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 ). : The most detailed version, showing actual table

: Represented as rectangles, these are the "nouns" of the system, such as Customer , Order , or Product . : The most detailed version