Vehicle.cs

    [Table("Vehicles")]
    public class Vehicle
    {
        [PrimaryKey, AutoIncrement]
        public int Id { get; set; }

        public string Brand { get; set; }

        public DateTime ProductionDate { get; set; }

        public decimal EngineCapacity { get; set; }

        [ForeignKey(typeof(RegistrationCertificate))]
        public int RegistrationCertificateId { get; set; }

        [OneToOne]
        public RegistrationCertificate RegistrationCertificate { get; set; }
    }