Entity Framework Core 和 ASP.NET Core MVC 中的 Inheritance 数据库

Question

I'm following this course MVC with Entity Framework Core

The class diagram in this course is something like this: Class Diagram image

In inheritance part Inheritance Part , they create a new table Person to store all the data for 2 models Student and Instructor in Entity Framework. And also drop 2 tables Student and Instructor in the database.

Now, there are 3 models in Entity Framework: Person , Student , Instructor

I try to get data into Student and Instructor models without loading Person by

modelBuilder.Entity<Person>().ToTable("Person");

and I get this message:

Code:

public DbSet<Student> Students { get; set; }
public DbSet<Instructor> Instructors { get; set; }
private DbSet<Person> People { get; set; }

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    modelBuilder.Entity<Student>().ToTable("Person");
    modelBuilder.Entity<Instructor>().ToTable("Person");
}

Questions

1. Does it mean all the data must be get into Entity Framework?

2. In situation, for sensitive data is there any kind of pattern to make inheritance database?

Thanks a lot.

Answer 1

Now, there are 3 models in Entity Framework: Person, Student, Instructor

If you don't have a use case that requires it, don't make Person an Entity. Just Student and Instructor. Then you won't have any inheritance in the database.