One-to-One Relationship (email addresses)

It is illustrated in the lesson that one person can have only one email address. Real world scenarios depict that you can have multiple. ( gmail, hotmail, your employer’s etc ).
Though the other attributes DOB and name will be one per person.

Hi @anwarkhan_79531,

I completely agree. The lesson just used that as an example for one-to-one relationship. Consider in an office, one employee only have one email address.