public void Initialization()
        {
            Database           database    = new Database();
            Observer           observer    = new Observer(database);
            FingerprintScanner fingerprint = new FingerprintScanner(database);

            database.onDatabaseConnection();
        }
        public void Initialization()
        {
            Database           database    = new Database();
            DatabaseObserver   observer    = new DatabaseObserver(database);
            FingerprintScanner fingerprint = new FingerprintScanner(database);

            Task.Run(() => database.onDatabaseConnection());
            Task.Run(() => fingerprint.Acid());
        }