7. One-to-many (or many-to-one) relationships

Example of a one-to-many relationship

Think about a mother and her children.

A mother can have many children

A child can have only one mother

this would be known as a 'one-to-many relationship'

This relationship can be portrayed diagramatically as:

one to many relationship


Challenge see if you can find out one extra fact on this topic that we haven't already told you

Click on this link: ER one to many


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