ER Diagrams

A  data model  is used to design a data warehouse. It represents the underlying structure of a database.  An ER Diagram in Database Management Systems is a high level data model used to construct a database in the form of tables. It is a collection of entities and relationships. An ER Diagram should be created in such a way that is understandable to even non-technical users. Here, we will see 5 different ER Diagrams.   1. ER Diagram for a Nonprofit Membership Management System: ER Diagram: This ER diagram captures the basic structure and relationships for a Nonprofit Membership Management System. Description: Entities : 1. Member:  Represents individuals who are members of the nonprofit organization.    - Attributes: MemberID (Primary Key), Name, Email, Phone, Address, Profession, Date joined 2.  Membership Type : Represents different types of memberships offered by the nonprofit organization.    - Attributes: TypeID (Primary Key), Name, Description, Fee 3.  Payment : Represents