using System.ComponentModel.DataAnnotations; using System.ComponentModel.DataAnnotations.Schema; namespace SushiBarDatabaseImplement.Models { public class Customer { [Key] public int Id { get; set; } [Required] public string Fio { get; set; } = string.Empty; [Required] public DateTime BirthdayDate { get; set; } [Required] public double SumOfAllOrders { get; set; } [ForeignKey("CustomerId")] public virtual List Cheques { get; set; } = new(); } }