Can I force multiplicity / bindings to Entity Framework?

Question

I have the following table structure that the Entity Framework correctly returns as one-to-many:

Patient
{
   PatientId PK
}

Death
{
   DeathId PK
   PatientId FK
}

Unfortunately, this database project is wrong, since you can only have one Deathfor it Patient. The design should look like this:

Death
{
   PatientId PK
}

However, this is a production system, and the database cannot be changed. I am writing a new ASP.Net MVC interface, so I am rewriting the DAL layer using the Entity Framework.

When I call Patient.Death, I get a collection Death. I want him to return me one or empty Death(since he Patientmight not be dead yet).

, End2 : 0..1 (Zero or One of Death), , :

"" 'RefDeath23. , *.

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Answer 1

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Answer 2

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