EF Core One to One or Zero Relationship

Here .HasForeignKey<Person>(a => a.PersonID) you are telling EF that Person.PersonID will be a FK (foreign key) to Address, i.e. Person is dependent and is referencing the principal Address. It should be other way around: .HasForeignKey<Address>(a => a.PersonID) This way, Person (the principal) will have 0..1 Address, and Address (the dependent) will have 1 Person (because … Read more

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