bool Database::load(const QString &filename)
{
    bool opened = false;

    if (!filename.isEmpty())
    {
        QFile file(filename);

        opened = file.open(QIODevice::ReadOnly);

        if (opened)
        {
            modified = false;

            QDataStream output(&file);

            output >> db >> ids >> maxId;

            file.close();
        }
    }

    return opened;
}