conex = (IConnectionDB) ProxyConnectionDB.newInstance(new ConnectionDB(args));
conex.connectMySQL();
break;
case SQLSERVER:
conex = (IConnectionDB) ProxyConnectionDB.newInstance(new ConnectionDB(args));
conex.connectSQLServer();
break;
case POSTGRES:
conex = (IConnectionDB) ProxyConnectionDB.newInstance(new ConnectionDBPostgre(args));
conex.connectPostgres();
break;