Minimum need data to create an Entity

 public class Book : BaseEntity
    {
        public string Name { get; set; } 
        
        public Genres Genres {get; set;}
        public string BriefDescription { get; set; }
        public string FullDescription { get; set; }
        
        public DateTime OriginallyPublishedAt { get; set; }
        public DateTime AppPublishedAt { get; set; }
        
        public ICollection<Author> Authors { get; set; } = new HashSet<Author>();
        public ICollection<DownloadableFile> DownloadableFiles { get; set; } = new HashSet<DownloadableFile>();
        

    }

 public record BookRequest()
    {
        public long Id { get; set; } // Do I need it here? MSDN has it here
        public string Name { get; set; }
        public Genres Genres { get; set; }
        public string BriefDescription { get; set; }
        public string FullDescription { get; set; }
        public DateTime OriginallyPublishedAt { get; set; } = new DateTime(1995, 11, 1);
        public ICollection<long> AuthorIds { get; set; } = new HashSet<long>();
        public ICollection<long> FileIds { get; set; } = new HashSet<long>();
    }