I have an existing database which I am accessing from 2 separate projects, one an ASP.NET MVC 5 project, and one running .NET Core 2.1 using the respective Entity Framework veri
You need to add the foreign key explicitly to the WorkOrder class as it does not match the EFCore convention:
public class WorkOrder
{
[Key]
public int WorkOrderId { get; set; }
public int Job_JobID {get;set;}
[ForeignKey("Job_JobID")]
public virtual Job Job { get; set; }
}