connection.query('DROP DATABASE IF EXISTS DATAEXTRACTION; CREATE DATABASE DATAEXTRACTION CHARACTER SET utf8mb4 COLLATE utf8mb4_bin',function(error,result,fields){
connection.query('DROP DATABASE IF EXISTS DATAEXTRACTION_NETWORK; CREATE DATABASE DATAEXTRACTION_NETWORK',function(error,result,fields){
cmd_makeIdb=exec('mysql -uroot -p1234 -e "DROP DATABASE IF EXISTS DATAEXTRACTION;CREATE DATABASE DATAEXTRACTION CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;USE DATAEXTRACTION;"',function(error,stdout,stderr){