实体框架-现有类重复，代码优先？

如何解决实体框架-现有类重复，代码优先？

我正在尝试一种方法来在Entity Framework MVC项目中存储票证项目的实际模板。问题是，过去我已经完成了Code First迁移过程。我需要做的是在代码中创建逻辑，以允许某人通过使用模板中的预加载数据来节省创建工单的时间。我当前的继承模型使用一个抽象类（MasterTicket）作为父类，因为对我来说可以有多个类别（基于Google Calendar的任务“ Appointment Task”和一个纯粹的内部任务“ General Task”）。这是我的父抽象类：

[Table("Ticket")]
[ModelBinder(typeof(MasterTicketBinder))]
public abstract class MasterTicket
{
    [Key]
    public Guid id{ get; set; }
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int ART { get; set; }
    public DateTime openTime{ get; set; }
    public DateTime? closeTime { get; set; }
    private bool active = true;
    public bool Active{ get => active; set => active = value; }
    public string summary{ get; set; }
    public string description{ get; set; }
    public DateTime updateTime{ get; set; }
    //TODO: Create foreign key relationship to user model
    public Guid userUpdateId{ get; set; }
    //TODO: Create foreign key relationship for tickets from other systems
    public Guid externalAppId{ get; set; }
    //TODO: Create foreign key relationship to user model
    public Guid userOpenId{ get; set; }
    public Guid? userCloseId { get; set; }
    public Guid userOwnerId{ get; set; }
    private int timesUpdated = 0;
    public int TimesUpdated { get => timesUpdated; set => timesUpdated = value; }
    public DateTime expectedCompletionTime{ get; set; }
    public DateTime actualCompletionTime{ get; set; }
    public List<MasterTicketItem> masterTicketItems{ get; set; }
    

    public MasterTicket()
    {

    }
}

以下是基于Google日历的具体“约会任务”子级的示例：

[Table("AppointmentTickets")]
public class ApptTaskTicket : MasterTicket
{
    public DateTime currentApptTime { get; set; }
    public DateTime? endApptTime { get; set; }
    public bool allDay { get; set; }
    public string customerName { get; set; }
    //TODO: Create foreign relationship
    public Guid subjectPrsnlId { get; set; }
    public string gCalEventId { get; set; }
    public string customerPhone { get; set; }
    public string customerEmail { get; set; }
    public string preferredContactMethod { get; set; }
    public List<ApptConfirmItem> apptConfirmItems { get; set; }
}

我知道我可以轻松地为MasterTicket类创建一列以表明它是模板，但是对我来说，如果可以存储一个预先存在的值，则单独拥有一个“ Template Table”会更干净。填写表格。在这种情况下，我想我想创建一个重复的类来存储所述模板，以便只有几行。用Code First做到这一点的最佳方法是什么？有人觉得我应该采取不同的方法吗？也许DB First是更好的选择？

万一重要，这是我的票证的DBContext：

// Code-Based Configuration and Dependency resolution  
[DbConfigurationType(typeof(MySqlEFConfiguration))]
public class TicketDB : DbContext
{

    public TicketDB(): base("AffirmativeServiceSystem.Properties.Settings.AffirmTaskManager")
    {

    }

    public DbSet<MasterTicket> tickets { get; set; }
    

    public DbSet<MasterTicketItem> ticketItems { get; set; }
    

}