static void Querie5()
        {
            Console.WriteLine("\t\tSelect the most powerful machine");
            var q1 = from ce in db.Computing_eguipment
                     select ce;
            var pow = new Computing_eguipment();

            foreach (var u in q1)
            {
                if (Convert.ToInt32(pow.computing_power) < Convert.ToInt32(u.computing_power))
                {
                    pow = u;
                }
            }
            Console.WriteLine(pow.ToString());
            Console.WriteLine();

            Console.ReadLine();
        }
        static void InitData()
        {
            //EquipmentStore store = new EquipmentStore();

            CE_user u1 = new CE_user
            {
                Id       = 1,
                name     = "Evgen",
                surname  = "Kravchenko",
                position = "sys.admin."
            };


            CE_user emp = new CE_user
            {
                Id       = 2,
                name     = "Emperor",
                surname  = "{unknown}",
                position = "Emperor of Mankind"
            };


            CE_user u2 = new CE_user
            {
                Id       = 3,
                name     = "Kama",
                surname  = "Puliya",
                position = "philosopher"
            };

            CE_user u3 = new CE_user
            {
                Id       = 4,
                name     = "Vovan",
                surname  = "Poliyan",
                position = "stranger"
            };

            db.CE_user.Add(u1);
            db.CE_user.Add(emp);
            db.CE_user.Add(u2);
            db.CE_user.Add(u3);

            Computing_eguipment c1 = new Computing_eguipment
            {
                Id              = 1,
                name            = "Comp1",
                price           = "200",
                computing_power = "100"
            };

            Computing_eguipment c2 = new Computing_eguipment
            {
                Id              = 2,
                name            = "Comp2",
                price           = "210",
                computing_power = "90"
            };

            Computing_eguipment trone = new Computing_eguipment
            {
                Id              = 3,
                name            = "Golden Trone",
                price           = "inf",
                computing_power = "40000"
            };

            db.Computing_eguipment.Add(c1);
            db.Computing_eguipment.Add(c2);
            db.Computing_eguipment.Add(trone);

            c1.CE_user.Add(u1);
            c1.CE_user.Add(u2);
            trone.CE_user.Add(emp);
            c2.CE_user.Add(u2);
            c2.CE_user.Add(u3);

            db.SaveChanges();
        }