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QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName("database.db");
if(!db.open()) return false;
QSqlQuery query;
query.exec("create table student (id int primary key, name vchar)");
query.exec("insert into student values (0,'a')");
query.exec("insert into student values (1,'b')");
query.exec("insert into student values (2,'c')");
return true;