Code first fluent api - table relationship - entity-framework

Question

I have following tables and need to set relationship between them.
Model classes for the tables are as given
public class UserAction
{
public int ActionID { get; set; }
public string ActionName { get; set; }
public virtual ICollection<RoleScreenActionPermission> RoleScreenActionPermissions { get; set; }
}
public class Screen
{
public int ScreenID { get; set; }
public string ScreenName { get; set; }
public virtual ICollection<RoleScreenActionPermission> RoleScreenActionPermissions { get; set; }
}
public class ScreenAction
{
public int ScreenActionID { get; set; }
public int ScreenID { get; set; }
public int ActionID { get; set; }
public virtual Screen Screen { get; set; }
public virtual UserAction UserAction { get; set; }
}
public class RoleScreenActionPermission
{
public int RoleScreenActionPermissionID { get; set; }
public int ScreenActionID { get; set; }
public int RoleID { get; set; }
public virtual ScreenAction ScreenAction { get; set; }
public virtual Role Role { get; set; }
}
The talbe structure created is as:
Please help with setting the relationship correctly.

Answer 1

Try to remove all your own foreign keys from your classes. EF must make it.
upd:
public class Screen
{
public int Id { get; set; }
public string Name { get; set; }
}
public class Action
{
public int Id { get; set; }
public string Name { get; set; }
}
public class ScreenAction
{
public int Id { get; set; }
public virtual Screen Screen { get; set; }
public virtual Action Action { get; set; }
}
public class RoleScreenActionPermission
{
public int Id { get; set; }
public virtual ScreenAction ScreenAction { get; set; }
public virtual Role Role { get; set; }
}