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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_database_config_file():
 """Get the absolute path to the database configuration file."""

    cfg = get_project_configuration()
    if 'dbconfig' in cfg:
        if os.path.isfile(cfg['dbconfig']):
            return cfg['dbconfig']
        else:
            logging.info("File '%s' was not found. Adjust 'dbconfig' in your "
                         "~/.hwrtrc file.",
                         cfg['dbconfig'])
    else:
        logging.info("No database connection file found. "
                     "Specify 'dbconfig' in your ~/.hwrtrc file.")
    return None