using System;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

using System.Data.Entity;

public class Program

{

    public static void Main()

    {

        //AddStudent();

        //RemoveStudent();

    }

    public static void RemoveStudent()

    {

        TestContext context = new TestContext();

        Student student = context.Students.Find(1);

        context.Students.Remove(student);

        context.SaveChanges();

    }

    public static void AddStudent()

    {

        Student student = new Student();

        student.Name = "Dumbledore";

        student.Address = new Address();

        student.Address.Street = "Test Street";

        TestContext context = new TestContext();

        context.Students.Add(student);

        context.SaveChanges();

    }

}

​

​

​

public class Student

{

    public int Id { get; set; }

    public string Name { get; set; }

    [Required]

    [ForeignKey("AddressId")]

    public virtual Address Address { get; set; }

    [Column("Address_Id")]

    public int AddressId { get; set; }

}

​

​

public class Address

{

    public int Id { get; set; }

    public string Street { get; set; }

}

​

public class TestContext : System.Data.Entity.DbContext

{

    public DbSet<Student> Students { get; set; }

    public DbSet<Address> Addresses { get; set; }

}