如何在EF Core中将桥接表拆分为两个表

Question

I have a requirement where I have slip the bridge table into tables for storing more info about the many to many relationship. So "idea" is that the ComputerUser table becomes two tables and reference that way so that more info can be stored in of these two bridge tables other than just many to many relationship references. Thank you for your insights Following is what I have so :

public  class Computer
{

[Key]
    public Guid ComputerId { get; set; }
    public string MachineName { get; set; }
    public DateTime Updated { get; set; }
    public string ClientVersion { get; set; }
    public DateTime LastActivity { get; set; }
    public string Secret { get; set; }
    public Setting Settings { get; set; }
    public bool IsActive { get; set; } 
    public bool? ResetRequested { get; set; } 
    public ICollection<ScanEvent> Scans { get; set; }
    public ICollection<EventLog> Logs { get; set; }
    public ICollection<ComputerUser> UserLinks { get; set; }
    }
public class ComputerUser
{
    [Key,Column(Order = 1)]
    public Guid ComputerId { get; set; }
    public  Computer Computer { get; set; }
    [Key, Column(Order = 2)]
    public Guid  UserId { get; set; }
    public  User User { get; set; }

}

    public class User
 {
    [Key]

   public Guid   UserId { get; set; } 
   public  string Name { get; set; }
   public bool IsActive { get; set; } = true;
   public DateTime Updated { get; set; } 
   public Setting Setting { get; set; } 
   public long SerialNumber { get; set; } 
   public virtual ICollection<Device> Devices { get; set; }
   public virtual ICollection<Credential> Credentials { get; set; }
   public virtual ICollection<ComputerUser> ComputerLinks { get; set; }
   }

Answer 1

All you're talking about is a M2M with a payload (ie additional information besides just the relationship itself). The only requirement for that is a using an actual entity class for your relationship, which you're already doing with ComputerUser . Simply add additional properties as necessary to that entity.