IBPP::Database db = IBPP::DatabaseFactory("localhost","c:/testspeed.fdb","sysdba","masterkey");
		db->Connect();

		if ( db->Connected() )
		{
			IBPP::Transaction tr = IBPP::TransactionFactory(db, IBPP::amWrite, 
				IBPP::ilConcurrency, IBPP::lrWait);
			tr->Start();

IBPP::Transaction tr = IBPP::TransactionFactory

Transaction TransactionFactory(Database db, TAM am,
					TIL il, TLR lr, TFF flags)
	{
	         ..............
		return new TransactionImpl(	dynamic_cast<DatabaseImpl*>(db.intf()),
									am, il, lr, flags);
	}