实体框架代码第一个0到1映射

public class Payment
{
    public int PaymentId { get; set; }
}

public class PaymentBank
{
    public int PaymentId { get; set; }
}

public class PaymentCheque
{
    public int PaymentId { get; set; }
}

Payment

PaymentBank

PaymentCheque

public class PaymentCheque : Payment
{
    public int RoutingNumber {get; set;}
}