@pavanforza
Hello and welcome.

Qt supports SQLite as a database, which is very simple to set up and use (file based). You can still send it SQL queries/statements to execute through the same Qt QSql...classes as would be used against an Oracle database.

@mrjj well, thanks.
I've tried to add #include <sqltypes.h> just in case, and voilà, now there are errors(C2065, C3861) inside Qt(drivers\odbc\qsql_odbc.cpp).

Don't know if it's better, but still something.