About this document
Understanding ER Diagrams and Relationships by Arnapier21 is a document available to read on EtoBox.
One customer received zero or more invoices. This is a one-to-many relationship between customers and invoices. An invoice was sent to one customer. This is the inverse relationship, which is many-to-one. A product type can be ordered by many customers and a customer can order many product types. This is a many-to-many relationship between customers and product types. A person has one birth certificate and a birth certificate is for one person. This is a one-to-one relationship.
- Author
- Arnapier21
- Language
- EN