Az Erdе‘rе‘l Apr 2026

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

: Adds more detail, defining attributes and keys but remaining independent of a specific database technology. AZ erdЕ‘rЕ‘l

: A high-level view showing major entities and their relationships without technical details. An is a visual report used to design

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

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

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

: They act as a blueprint for developers to build the actual physical database.