Entity-Framework-DBZ/EntityFrameworkCore.Domain/BaseDomainModel.cs

using System.ComponentModel.DataAnnotations;

namespace EntityFrameworkCore.Domain;
// Since C#11, you do not need to wrap in accolades anymore.
public abstract class BaseDomainModel
{
  public int Id { get; set; } // Anything called "Id" is automatically a Primary Key.
  public DateTime CreatedDate { get; set;}
  public DateTime ModifiedDate { get; set;}
  public string? CreatedBy { get; set; }
  public string? ModifiedBy { get; set; }

  // SQL Server method to setup concurrency column.
  // [Timestamp]
  // public byte[] Version { get; set; }

  // SQLite (and other) method to setup concurrency column.
  [ConcurrencyCheck]
  public Guid Version { get; set; }
}