api/API_sm/ModelBase/Client.cs

using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace API_sm.ModelBase
{
    [Table("client")]
    public class Client
    {
        [Key]
        public int ID { get; set; }
        public string Name { get; set; }
        public string Surname { get; set; }
        public string Patronymic { get; set; }
        public string Address { get; set; }
        public string Number { get; set; }
    }
}