#include <QtGui>
 #include <QtSql>

 int main(int argc, char *argv[]) {
 
    QApplication app(argc, argv);
 
    QSqlDatabase db;   

    db = QSqlDatabase::addDatabase("QSQLITE", "base_ex.db");
    QString file="base_ex.db";
    db.setDatabaseName(file);
    db.open();
   
     QSqlTableModel *sqm_tecushie;
     sqm_tecushie = new QSqlTableModel(0,db);
     sqm_tecushie->setTable("sample");
     sqm_tecushie->select();
  
 
     QTableView *view = new QTableView();
     view->setModel(sqm_tecushie);
 
      
     view->resizeRowsToContents();
     view->resizeColumnsToContents();
     view->show();
     
     QTableView *view2 = new QTableView();
     view2->setModel(sqm_tecushie);
     
     QObject::connect(sqm_tecushie,
     SIGNAL( dataChanged ( const QModelIndex &, const QModelIndex &) ),
     view2,
     SLOT(show()));
     
     
 
     return app.exec();
 }