Erdе‘rе‘l - Az

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

: Represented as ovals, these describe the specific characteristics of an entity (e.g., a Customer entity might have attributes like Name or Email ). AZ erdЕ‘rЕ‘l

An is a visual report used to design and model relational databases by illustrating how different "entities" (like people, objects, or concepts) relate to one another within a system. Core Components of an ERD : They serve as high-level documentation of a

: A high-level view showing major entities and their relationships without technical details. Core Components of an ERD : A high-level

For professional modeling, tools like Lucidchart or Visual Paradigm are widely used to create and share these diagrams. What is an Entity Relationship Diagram (ERD)? - Lucidchart

: They provide a common visual language for stakeholders, business analysts, and engineers to discuss data requirements.

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