Entity Framework Code First Foreign Key adding Index as well

Question

I have simple table definition in EF 6 code-first with simple foreign key.

public class Address
{
        /// 

        /// Gets or sets the id         


        

Answer 1

This is just a convention of Entity Framework. If you don't like it, then you can enable migrations on your project and change the migration to not include the foreign key. I disagree with your assertion that it is inefficient, though.

To enable database migrations do the following:

1. In the Package Manager console, type Enable-Migrations
2. In the Package Manager console, type Add-Migration InitialMigration
3. A new migration will be added to the Migrations folder, in it you will see an Up method with a few statements. Find the line that adds the foreign key and remove it.
4. In the Package Manager console, type Update-Database to apply migrations.
5. Repeat steps 2-4 for any new changes that come in.

This is assuming you do not have a database yet and are starting from scratch.