ER diagram for online store using Crow's foot (attributes & cardinalities)

Data Model | Types of Database Models in Database Management System(dbms) with example

DBMS Architecture 2-Level, 3-Level - GeeksforGeeks

Part 2.5 Degree of a Relationship in a ER Diagram in DBMS in hindi name degree Cartesian ratio

DBMS: How to draw ER diagram & Relational schema eg. company database