1. A computer-readable medium having computer executable instructions stored thereon, said computer executable instructions causing a computer to carry out steps comprising: a retrieving step that retrieves a log file from log file storage that stores log data output by at least one device as the log file, the log file being based on a non-SQL specification; a converting step that converts the log data contained in the retrieved log file using a script that is stored in a script storage, the script being modifiable by incorporating character strings necessary for converting the log data to a first registration file and a second registration file to be registered with a first database and a second database, respectively, the first and second registration files complying with an SQL specification, said first database complying with the SQL specification and a first language specification, said second database complying with the SQL specification and a second language specification which is different from said first language specification.